Fullscreen video in Android WebView

content/browser/android/in_process/synchronous_compositor_impl.cc

 // Copyright 2013 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 "content/browser/android/in_process/synchronous_compositor_impl.h"
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/synchronization/lock.h"
 #include "cc/input/input_handler.h"
@@ skipping 48 matching lines @@
 
   virtual InputHandlerManagerClient* GetInputHandlerManagerClient() OVERRIDE {
     return synchronous_input_event_filter();
   }
 
   SynchronousInputEventFilter* synchronous_input_event_filter() {
     return &synchronous_input_event_filter_;
   }
 
   virtual scoped_refptr<cc::ContextProvider>
-      GetOffscreenContextProviderForMainThread() OVERRIDE {
-    NOTIMPLEMENTED()
-        << "Synchronous compositor does not support main thread context yet.";
-    return scoped_refptr<cc::ContextProvider>();
+  GetOffscreenContextProviderForMainThread() OVERRIDE {
+    if (!offscreen_context_for_main_thread_.get() ||
+        offscreen_context_for_main_thread_->DestroyedOnMainThread()) {
+      offscreen_context_for_main_thread_ =
+          webkit::gpu::ContextProviderInProcess::Create();
+      if (offscreen_context_for_main_thread_.get() &&
+          !offscreen_context_for_main_thread_->BindToCurrentThread())
+        offscreen_context_for_main_thread_ = NULL;
+    }
+    return offscreen_context_for_main_thread_;
   }
 
   // This is called on both renderer main thread (offscreen context creation
   // path shared between cross-process and in-process platforms) and renderer
   // compositor impl thread (InitializeHwDraw) in order to support Android
   // WebView synchronously enable and disable hardware mode multiple times in
   // the same task. This is ok because in-process WGC3D creation may happen on
   // any thread and is lightweight.
   virtual scoped_refptr<cc::ContextProvider>
       GetOffscreenContextProviderForCompositorThread() OVERRIDE {
     base::AutoLock lock(offscreen_context_for_compositor_thread_creation_lock_);
     if (!offscreen_context_for_compositor_thread_.get() ||
         offscreen_context_for_compositor_thread_->DestroyedOnMainThread()) {
       offscreen_context_for_compositor_thread_ =
           webkit::gpu::ContextProviderInProcess::Create();
     }
     return offscreen_context_for_compositor_thread_;
   }
 
  private:
   SynchronousInputEventFilter synchronous_input_event_filter_;
 
   // Only guards construction of |offscreen_context_for_compositor_thread_|,
   // not usage.
   base::Lock offscreen_context_for_compositor_thread_creation_lock_;
+  scoped_refptr<cc::ContextProvider> offscreen_context_for_main_thread_;
   scoped_refptr<cc::ContextProvider> offscreen_context_for_compositor_thread_;
 };
 
 base::LazyInstance<SynchronousCompositorFactoryImpl>::Leaky g_factory =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(SynchronousCompositorImpl);
 
@@ skipping 172 matching lines @@
     g_factory.Get();  // Ensure it's initialized.
     SynchronousCompositorImpl::CreateForWebContents(contents);
   }
   if (SynchronousCompositorImpl* instance =
       SynchronousCompositorImpl::FromWebContents(contents)) {
     instance->SetClient(client);
   }
 }
 
 }  // namespace content