gpu: Add extension check when initializing MailboxSync

android_webview/lib/main/aw_main_delegate.cc

 // 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/main/aw_main_delegate.h"
 
 #include "android_webview/browser/aw_content_browser_client.h"
 #include "android_webview/browser/gpu_memory_buffer_factory_impl.h"
 #include "android_webview/browser/hardware_renderer.h"
 #include "android_webview/browser/scoped_allow_wait_for_legacy_web_view_api.h"
 #include "android_webview/common/aw_switches.h"
 #include "android_webview/lib/aw_browser_dependency_factory_impl.h"
 #include "android_webview/native/aw_geolocation_permission_context.h"
 #include "android_webview/native/aw_quota_manager_bridge_impl.h"
 #include "android_webview/native/aw_web_contents_view_delegate.h"
 #include "android_webview/native/aw_web_preferences_populater_impl.h"
 #include "android_webview/renderer/aw_content_renderer_client.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_restrictions.h"
 #include "content/public/browser/browser_main_runner.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/content_switches.h"
 #include "gpu/command_buffer/client/gl_in_process_context.h"
 #include "gpu/command_buffer/service/in_process_command_buffer.h"
-#include "gpu/command_buffer/service/mailbox_synchronizer.h"
 #include "media/base/media_switches.h"
 #include "webkit/common/gpu/webgraphicscontext3d_in_process_command_buffer_impl.h"
 
 namespace android_webview {
 
 namespace {
 
 // TODO(boliu): Remove this global Allow once the underlying issues are
 // resolved - http://crbug.com/240453. See AwMainDelegate::RunProcess below.
 base::LazyInstance<scoped_ptr<ScopedAllowWaitForLegacyWebViewApi> >
@@ skipping 21 matching lines @@
   cl->AppendSwitch(switches::kEnableMapImage);
   cl->AppendSwitch(switches::kEnableImplSidePainting);
 
   // WebView uses the Android system's scrollbars and overscroll glow.
   cl->AppendSwitch(switches::kDisableOverscrollEdgeEffect);
 
   // Not yet supported in single-process mode.
   cl->AppendSwitch(switches::kDisableExperimentalWebGL);
   cl->AppendSwitch(switches::kDisableSharedWorkers);
 
-  if (!gpu::gles2::MailboxSynchronizer::Initialize())
-    cl->AppendSwitch(switches::kDisableAccelerated2dCanvas);
 
   // File system API not supported (requires some new API; internal bug 6930981)
   cl->AppendSwitch(switches::kDisableFileSystem);
 
   // Fullscreen video with subtitle is not yet supported.
   cl->AppendSwitch(switches::kDisableOverlayFullscreenVideoSubtitle);
 
 #if defined(VIDEO_HOLE)
   // Support EME/L1 with hole-punching.
   cl->AppendSwitch(switches::kMediaDrmEnableNonCompositing);
@@ skipping 63 matching lines @@
 content::WebContentsViewDelegate* AwMainDelegate::CreateViewDelegate(
     content::WebContents* web_contents) {
   return AwWebContentsViewDelegate::Create(web_contents);
 }
 
 AwWebPreferencesPopulater* AwMainDelegate::CreateWebPreferencesPopulater() {
   return new AwWebPreferencesPopulaterImpl();
 }
 
 }  // namespace android_webview