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- // Copyright (c) 2012 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "android_webview/lib/aw_main_delegate.h"
- #include <memory>
- #include "android_webview/browser/aw_content_browser_client.h"
- #include "android_webview/browser/aw_media_url_interceptor.h"
- #include "android_webview/browser/gfx/aw_draw_fn_impl.h"
- #include "android_webview/browser/gfx/browser_view_renderer.h"
- #include "android_webview/browser/gfx/gpu_service_webview.h"
- #include "android_webview/browser/gfx/viz_compositor_thread_runner_webview.h"
- #include "android_webview/browser/tracing/aw_trace_event_args_allowlist.h"
- #include "android_webview/common/aw_descriptors.h"
- #include "android_webview/common/aw_features.h"
- #include "android_webview/common/aw_paths.h"
- #include "android_webview/common/aw_resource_bundle.h"
- #include "android_webview/common/aw_switches.h"
- #include "android_webview/common/crash_reporter/aw_crash_reporter_client.h"
- #include "android_webview/common/crash_reporter/crash_keys.h"
- #include "android_webview/gpu/aw_content_gpu_client.h"
- #include "android_webview/renderer/aw_content_renderer_client.h"
- #include "base/android/apk_assets.h"
- #include "base/android/build_info.h"
- #include "base/bind.h"
- #include "base/check_op.h"
- #include "base/command_line.h"
- #include "base/cpu.h"
- #include "base/i18n/icu_util.h"
- #include "base/i18n/rtl.h"
- #include "base/posix/global_descriptors.h"
- #include "base/scoped_add_feature_flags.h"
- #include "base/strings/string_number_conversions.h"
- #include "base/strings/string_split.h"
- #include "base/strings/string_util.h"
- #include "base/threading/thread_restrictions.h"
- #include "build/build_config.h"
- #include "cc/base/switches.h"
- #include "components/autofill/core/common/autofill_features.h"
- #include "components/crash/core/common/crash_key.h"
- #include "components/embedder_support/switches.h"
- #include "components/gwp_asan/buildflags/buildflags.h"
- #include "components/metrics/unsent_log_store_metrics.h"
- #include "components/safe_browsing/android/safe_browsing_api_handler_bridge.h"
- #include "components/services/heap_profiling/public/cpp/profiling_client.h"
- #include "components/spellcheck/spellcheck_buildflags.h"
- #include "components/translate/core/common/translate_util.h"
- #include "components/variations/variations_ids_provider.h"
- #include "components/version_info/android/channel_getter.h"
- #include "components/viz/common/features.h"
- #include "content/public/browser/android/media_url_interceptor_register.h"
- #include "content/public/browser/browser_main_runner.h"
- #include "content/public/browser/browser_thread.h"
- #include "content/public/common/content_descriptor_keys.h"
- #include "content/public/common/content_features.h"
- #include "content/public/common/content_switches.h"
- #include "content/public/common/main_function_params.h"
- #include "device/base/features.h"
- #include "gin/public/isolate_holder.h"
- #include "gin/v8_initializer.h"
- #include "gpu/command_buffer/service/gpu_switches.h"
- #include "gpu/config/gpu_finch_features.h"
- #include "media/base/media_switches.h"
- #include "media/media_buildflags.h"
- #include "net/base/features.h"
- #include "services/network/public/cpp/features.h"
- #include "third_party/abseil-cpp/absl/types/variant.h"
- #include "third_party/blink/public/common/features.h"
- #include "ui/base/ui_base_paths.h"
- #include "ui/base/ui_base_switches.h"
- #include "ui/events/gesture_detection/gesture_configuration.h"
- #include "ui/gl/gl_switches.h"
- #if BUILDFLAG(ENABLE_SPELLCHECK)
- #include "components/spellcheck/common/spellcheck_features.h"
- #endif // ENABLE_SPELLCHECK
- #if BUILDFLAG(ENABLE_GWP_ASAN)
- #include "components/gwp_asan/client/gwp_asan.h" // nogncheck
- #endif
- namespace android_webview {
- AwMainDelegate::AwMainDelegate() = default;
- AwMainDelegate::~AwMainDelegate() = default;
- absl::optional<int> AwMainDelegate::BasicStartupComplete() {
- TRACE_EVENT0("startup", "AwMainDelegate::BasicStartupComplete");
- base::CommandLine* cl = base::CommandLine::ForCurrentProcess();
- // WebView uses the Android system's scrollbars and overscroll glow.
- cl->AppendSwitch(switches::kDisableOverscrollEdgeEffect);
- // Pull-to-refresh should never be a default WebView action.
- cl->AppendSwitch(switches::kDisablePullToRefreshEffect);
- // Not yet supported in single-process mode.
- cl->AppendSwitch(switches::kDisableSharedWorkers);
- // File system API not supported (requires some new API; internal bug 6930981)
- cl->AppendSwitch(switches::kDisableFileSystem);
- // Web Notification API and the Push API are not supported (crbug.com/434712)
- cl->AppendSwitch(switches::kDisableNotifications);
- // Check damage in OnBeginFrame to prevent unnecessary draws.
- cl->AppendSwitch(cc::switches::kCheckDamageEarly);
- // This is needed for sharing textures across the different GL threads.
- cl->AppendSwitch(switches::kEnableThreadedTextureMailboxes);
- // WebView does not yet support screen orientation locking.
- cl->AppendSwitch(switches::kDisableScreenOrientationLock);
- // WebView does not currently support Web Speech Synthesis API,
- // but it does support Web Speech Recognition API (crbug.com/487255).
- cl->AppendSwitch(switches::kDisableSpeechSynthesisAPI);
- // WebView does not currently support the Permissions API (crbug.com/490120)
- cl->AppendSwitch(switches::kDisablePermissionsAPI);
- // WebView does not (yet) save Chromium data during shutdown, so add setting
- // for Chrome to aggressively persist DOM Storage to minimize data loss.
- // http://crbug.com/479767
- cl->AppendSwitch(switches::kEnableAggressiveDOMStorageFlushing);
- // Webview does not currently support the Presentation API, see
- // https://crbug.com/521319
- cl->AppendSwitch(switches::kDisablePresentationAPI);
- // WebView doesn't support Remote Playback API for the same reason as the
- // Presentation API, see https://crbug.com/521319.
- cl->AppendSwitch(switches::kDisableRemotePlaybackAPI);
- // WebView does not support MediaSession API since there's no UI for media
- // metadata and controls.
- cl->AppendSwitch(switches::kDisableMediaSessionAPI);
- // We have crash dumps to diagnose regressions in remote font analysis or cc
- // serialization errors but most of their utility is in identifying URLs where
- // the regression occurs. This info is not available for webview so there
- // isn't much point in having the crash dumps there.
- cl->AppendSwitch(switches::kDisableOoprDebugCrashDump);
- // Disable BackForwardCache for Android WebView as it is not supported.
- // WebView-specific code hasn't been audited and fixed to ensure compliance
- // with the changed API contracts around new navigation types and changes to
- // the document lifecycle.
- cl->AppendSwitch(switches::kDisableBackForwardCache);
- // Deemed that performance benefit is not worth the stability cost.
- // See crbug.com/1309151.
- cl->AppendSwitch(switches::kDisableGpuShaderDiskCache);
- if (cl->GetSwitchValueASCII(switches::kProcessType).empty()) {
- // Browser process (no type specified).
- content::RegisterMediaUrlInterceptor(new AwMediaUrlInterceptor());
- BrowserViewRenderer::CalculateTileMemoryPolicy();
- // WebView apps can override WebView#computeScroll to achieve custom
- // scroll/fling. As a result, fling animations may not be ticked,
- // potentially
- // confusing the tap suppression controller. Simply disable it for WebView
- ui::GestureConfiguration::GetInstance()
- ->set_fling_touchscreen_tap_suppression_enabled(false);
- if (AwDrawFnImpl::IsUsingVulkan())
- cl->AppendSwitch(switches::kWebViewDrawFunctorUsesVulkan);
- #if defined(USE_V8_CONTEXT_SNAPSHOT)
- const gin::V8SnapshotFileType file_type =
- gin::V8SnapshotFileType::kWithAdditionalContext;
- #else
- const gin::V8SnapshotFileType file_type = gin::V8SnapshotFileType::kDefault;
- #endif
- base::android::RegisterApkAssetWithFileDescriptorStore(
- content::kV8Snapshot32DataDescriptor,
- gin::V8Initializer::GetSnapshotFilePath(true, file_type));
- base::android::RegisterApkAssetWithFileDescriptorStore(
- content::kV8Snapshot64DataDescriptor,
- gin::V8Initializer::GetSnapshotFilePath(false, file_type));
- {
- // Disable origin trial features on WebView unless the flag was explicitly
- // specified via command-line.
- std::string disabled_origin_trials_switch_value = cl->GetSwitchValueASCII(
- embedder_support::kOriginTrialDisabledFeatures);
- base::flat_set<std::string> disabled_origin_trials(
- base::SplitString(disabled_origin_trials_switch_value, "|",
- base::TRIM_WHITESPACE, base::SPLIT_WANT_NONEMPTY));
- // Disable origin trials for the FedCM API on WebView because the FedCM
- // API is not implemented on WebView. The inserted feature string should
- // match a name in
- // third_party/blink/renderer/platform/runtime_enabled_features.json5.
- // Currently, there is no method to obtain these strings directly so it is
- // hard coded.
- disabled_origin_trials.insert("FedCM");
- cl->AppendSwitchASCII(
- embedder_support::kOriginTrialDisabledFeatures,
- base::JoinString(std::move(disabled_origin_trials).extract(), "|"));
- }
- }
- if (cl->HasSwitch(switches::kWebViewSandboxedRenderer)) {
- cl->AppendSwitch(switches::kInProcessGPU);
- }
- {
- base::ScopedAddFeatureFlags features(cl);
- if (base::android::BuildInfo::GetInstance()->sdk_int() >=
- base::android::SDK_VERSION_OREO) {
- features.EnableIfNotSet(autofill::features::kAutofillExtractAllDatalists);
- features.EnableIfNotSet(
- autofill::features::kAutofillSkipComparingInferredLabels);
- }
- if (cl->HasSwitch(switches::kWebViewLogJsConsoleMessages)) {
- features.EnableIfNotSet(::features::kLogJsConsoleMessages);
- }
- if (!cl->HasSwitch(switches::kWebViewDrawFunctorUsesVulkan)) {
- // Not use ANGLE's Vulkan backend, if the draw functor is not using
- // Vulkan.
- features.DisableIfNotSet(::features::kDefaultANGLEVulkan);
- }
- if (cl->HasSwitch(switches::kWebViewMPArchFencedFrames)) {
- features.EnableIfNotSetWithParameter(blink::features::kFencedFrames,
- "implementation_type", "mparch");
- features.EnableIfNotSet(blink::features::kSharedStorageAPI);
- features.EnableIfNotSet(::features::kPrivacySandboxAdsAPIsOverride);
- }
- if (cl->HasSwitch(switches::kWebViewShadowDOMFencedFrames)) {
- features.EnableIfNotSetWithParameter(blink::features::kFencedFrames,
- "implementation_type", "shadow_dom");
- features.EnableIfNotSet(blink::features::kSharedStorageAPI);
- features.EnableIfNotSet(::features::kPrivacySandboxAdsAPIsOverride);
- }
- // WebView uses kWebViewVulkan to control vulkan. Pre-emptively disable
- // kVulkan in case it becomes enabled by default.
- features.DisableIfNotSet(::features::kVulkan);
- features.DisableIfNotSet(::features::kWebPayments);
- features.DisableIfNotSet(::features::kServiceWorkerPaymentApps);
- // WebView does not support overlay fullscreen yet for video overlays.
- features.DisableIfNotSet(media::kOverlayFullscreenVideo);
- // WebView does not support EME persistent license yet, because it's not
- // clear on how user can remove persistent media licenses from UI.
- features.DisableIfNotSet(media::kMediaDrmPersistentLicense);
- // WebView does not support Picture-in-Picture yet.
- features.DisableIfNotSet(media::kPictureInPictureAPI);
- features.DisableIfNotSet(::features::kBackgroundFetch);
- // SurfaceControl is controlled by kWebViewSurfaceControl flag.
- features.DisableIfNotSet(::features::kAndroidSurfaceControl);
- // TODO(https://crbug.com/963653): WebOTP is not yet supported on
- // WebView.
- features.DisableIfNotSet(::features::kWebOTP);
- // TODO(https://crbug.com/1012899): WebXR is not yet supported on WebView.
- features.DisableIfNotSet(::features::kWebXr);
- features.DisableIfNotSet(::features::kWebXrArModule);
- features.DisableIfNotSet(device::features::kWebXrHitTest);
- // TODO(https://crbug.com/1312827): Digital Goods API is not yet supported
- // on WebView.
- features.DisableIfNotSet(::features::kDigitalGoodsApi);
- features.DisableIfNotSet(::features::kDynamicColorGamut);
- // De-jelly is never supported on WebView.
- features.EnableIfNotSet(::features::kDisableDeJelly);
- // COOP is not supported on WebView yet. See:
- // https://groups.google.com/a/chromium.org/forum/#!topic/blink-dev/XBKAGb2_7uAi.
- features.DisableIfNotSet(network::features::kCrossOriginOpenerPolicy);
- features.DisableIfNotSet(::features::kInstalledApp);
- features.EnableIfNotSet(
- metrics::UnsentLogStoreMetrics::kRecordLastUnsentLogMetadataMetrics);
- features.DisableIfNotSet(::features::kPeriodicBackgroundSync);
- // TODO(crbug.com/921655): Add support for User Agent Client hints on
- // WebView.
- features.DisableIfNotSet(blink::features::kUserAgentClientHint);
- // Disable Reducing User Agent minor version on WebView.
- features.DisableIfNotSet(blink::features::kReduceUserAgentMinorVersion);
- // Disabled until viz scheduling can be improved.
- features.DisableIfNotSet(::features::kUseSurfaceLayerForVideoDefault);
- // Enabled by default for webview.
- features.EnableIfNotSet(::features::kWebViewThreadSafeMediaDefault);
- // Disable dr-dc on webview.
- features.DisableIfNotSet(::features::kEnableDrDc);
- // TODO(crbug.com/1100993): Web Bluetooth is not yet supported on WebView.
- features.DisableIfNotSet(::features::kWebBluetooth);
- // TODO(crbug.com/933055): WebUSB is not yet supported on WebView.
- features.DisableIfNotSet(::features::kWebUsb);
- // Disable TFLite based language detection on webview until webview supports
- // ML model delivery via Optimization Guide component.
- // TODO(crbug.com/1292622): Enable the feature on Webview.
- features.DisableIfNotSet(::translate::kTFLiteLanguageDetectionEnabled);
- // Disable key pinning enforcement on webview.
- features.DisableIfNotSet(net::features::kStaticKeyPinningEnforcement);
- // Have the network service in the browser process even if we have separate
- // renderer processes. See also: switches::kInProcessGPU above.
- features.EnableIfNotSet(::features::kNetworkServiceInProcess);
- // Disable Event.path on Canary and Dev to help the deprecation and removal.
- // See crbug.com/1277431 for more details.
- if (version_info::android::GetChannel() < version_info::Channel::BETA)
- features.DisableIfNotSet(blink::features::kEventPath);
- // FedCM is not yet supported on WebView.
- features.DisableIfNotSet(::features::kFedCm);
- }
- android_webview::RegisterPathProvider();
- // Used only if the argument filter is enabled in tracing config,
- // as is the case by default in aw_tracing_controller.cc
- base::trace_event::TraceLog::GetInstance()->SetArgumentFilterPredicate(
- base::BindRepeating(&IsTraceEventArgsAllowlisted));
- base::trace_event::TraceLog::GetInstance()->SetMetadataFilterPredicate(
- base::BindRepeating(&IsTraceMetadataAllowlisted));
- base::trace_event::TraceLog::GetInstance()->SetRecordHostAppPackageName(true);
- // The TLS slot used by the memlog allocator shim needs to be initialized
- // early to ensure that it gets assigned a low slot number. If it gets
- // initialized too late, the glibc TLS system will require a malloc call in
- // order to allocate storage for a higher slot number. Since malloc is hooked,
- // this causes re-entrancy into the allocator shim, while the TLS object is
- // partially-initialized, which the TLS object is supposed to protect again.
- heap_profiling::InitTLSSlot();
- return absl::nullopt;
- }
- void AwMainDelegate::PreSandboxStartup() {
- TRACE_EVENT0("startup", "AwMainDelegate::PreSandboxStartup");
- #if defined(ARCH_CPU_ARM_FAMILY)
- // Create an instance of the CPU class to parse /proc/cpuinfo and cache
- // cpu_brand info.
- base::CPU cpu_info;
- #endif
- const base::CommandLine& command_line =
- *base::CommandLine::ForCurrentProcess();
- std::string process_type =
- command_line.GetSwitchValueASCII(switches::kProcessType);
- const bool is_browser_process = process_type.empty();
- if (!is_browser_process) {
- base::i18n::SetICUDefaultLocale(
- command_line.GetSwitchValueASCII(switches::kLang));
- }
- if (process_type == switches::kRendererProcess) {
- InitResourceBundleRendererSide();
- }
- EnableCrashReporter(process_type);
- base::android::BuildInfo* android_build_info =
- base::android::BuildInfo::GetInstance();
- static ::crash_reporter::CrashKeyString<64> app_name_key(
- crash_keys::kAppPackageName);
- app_name_key.Set(android_build_info->host_package_name());
- static ::crash_reporter::CrashKeyString<64> app_version_key(
- crash_keys::kAppPackageVersionCode);
- app_version_key.Set(android_build_info->host_version_code());
- static ::crash_reporter::CrashKeyString<8> sdk_int_key(
- crash_keys::kAndroidSdkInt);
- sdk_int_key.Set(base::NumberToString(android_build_info->sdk_int()));
- }
- absl::variant<int, content::MainFunctionParams> AwMainDelegate::RunProcess(
- const std::string& process_type,
- content::MainFunctionParams main_function_params) {
- // Defer to the default main method outside the browser process.
- if (!process_type.empty())
- return std::move(main_function_params);
- browser_runner_ = content::BrowserMainRunner::Create();
- int exit_code = browser_runner_->Initialize(std::move(main_function_params));
- // We do not expect Initialize() to ever fail in AndroidWebView. On success
- // it returns a negative value but we do not want to use that on Android.
- DCHECK_LT(exit_code, 0);
- return 0;
- }
- void AwMainDelegate::ProcessExiting(const std::string& process_type) {
- // TODO(torne): Clean up resources when we handle them.
- logging::CloseLogFile();
- }
- bool AwMainDelegate::ShouldCreateFeatureList(InvokedIn invoked_in) {
- // In the browser process the FeatureList is created in
- // AwMainDelegate::PostEarlyInitialization().
- return absl::holds_alternative<InvokedInChildProcess>(invoked_in);
- }
- variations::VariationsIdsProvider*
- AwMainDelegate::CreateVariationsIdsProvider() {
- return variations::VariationsIdsProvider::Create(
- variations::VariationsIdsProvider::Mode::kDontSendSignedInVariations);
- }
- absl::optional<int> AwMainDelegate::PostEarlyInitialization(
- InvokedIn invoked_in) {
- const bool is_browser_process =
- absl::holds_alternative<InvokedInBrowserProcess>(invoked_in);
- if (is_browser_process) {
- InitIcuAndResourceBundleBrowserSide();
- aw_feature_list_creator_->CreateFeatureListAndFieldTrials();
- }
- version_info::Channel channel = version_info::android::GetChannel();
- [[maybe_unused]] const bool is_canary_dev =
- (channel == version_info::Channel::CANARY ||
- channel == version_info::Channel::DEV);
- [[maybe_unused]] const std::string process_type =
- base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
- switches::kProcessType);
- #if BUILDFLAG(ENABLE_GWP_ASAN_MALLOC)
- gwp_asan::EnableForMalloc(is_canary_dev || is_browser_process,
- process_type.c_str());
- #endif
- #if BUILDFLAG(ENABLE_GWP_ASAN_PARTITIONALLOC)
- gwp_asan::EnableForPartitionAlloc(is_canary_dev || is_browser_process,
- process_type.c_str());
- #endif
- return absl::nullopt;
- }
- content::ContentClient* AwMainDelegate::CreateContentClient() {
- return &content_client_;
- }
- content::ContentBrowserClient* AwMainDelegate::CreateContentBrowserClient() {
- DCHECK(!aw_feature_list_creator_);
- aw_feature_list_creator_ = std::make_unique<AwFeatureListCreator>();
- content_browser_client_ =
- std::make_unique<AwContentBrowserClient>(aw_feature_list_creator_.get());
- return content_browser_client_.get();
- }
- namespace {
- gpu::SyncPointManager* GetSyncPointManager() {
- DCHECK(GpuServiceWebView::GetInstance());
- return GpuServiceWebView::GetInstance()->sync_point_manager();
- }
- gpu::SharedImageManager* GetSharedImageManager() {
- DCHECK(GpuServiceWebView::GetInstance());
- return GpuServiceWebView::GetInstance()->shared_image_manager();
- }
- viz::VizCompositorThreadRunner* GetVizCompositorThreadRunner() {
- return VizCompositorThreadRunnerWebView::GetInstance();
- }
- } // namespace
- content::ContentGpuClient* AwMainDelegate::CreateContentGpuClient() {
- content_gpu_client_ = std::make_unique<AwContentGpuClient>(
- base::BindRepeating(&GetSyncPointManager),
- base::BindRepeating(&GetSharedImageManager),
- base::BindRepeating(&GetVizCompositorThreadRunner));
- return content_gpu_client_.get();
- }
- content::ContentRendererClient* AwMainDelegate::CreateContentRendererClient() {
- content_renderer_client_ = std::make_unique<AwContentRendererClient>();
- return content_renderer_client_.get();
- }
- } // namespace android_webview
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