Add ContextProvider overrides to SynchronousCompositorFactory

SynchronousCompositorFactory does not create the main thread
one since we have not figured out how to get its clients
(video/webgl/canvas) to work in this architecture. This will
cause dynamic but graceful failures when trying to load these
type of contents.

For compositor thread one, create ContextProviderInProcess.

BUG=230197,239760
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/16235005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@204941 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/android/in_process/synchronous_compositor_impl.cc

@@ -12,6 +12,7 @@
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/renderer/android/synchronous_compositor_factory.h"
+#include "webkit/common/gpu/context_provider_in_process.h"
 
 namespace content {
 
@@ -59,8 +60,26 @@ class SynchronousCompositorFactoryImpl : public SynchronousCompositorFactory {
     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>();
+  }
+
+  virtual scoped_refptr<cc::ContextProvider>
+      GetOffscreenContextProviderForCompositorThread() OVERRIDE {
+    if (!offscreen_context_for_compositor_thread_ ||
+        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_;
+  scoped_refptr<cc::ContextProvider> offscreen_context_for_compositor_thread_;
 };
 
 base::LazyInstance<SynchronousCompositorFactoryImpl>::Leaky g_factory =

content/renderer/android/synchronous_compositor_factory.h

@@ -13,6 +13,7 @@ class MessageLoopProxy;
 }
 
 namespace cc {
+class ContextProvider;
 class OutputSurface;
 }
 
@@ -39,6 +40,11 @@ class SynchronousCompositorFactory {
   // The factory maintains ownership of the returned interface.
   virtual InputHandlerManagerClient* GetInputHandlerManagerClient() = 0;
 
+  virtual scoped_refptr<cc::ContextProvider>
+      GetOffscreenContextProviderForMainThread() = 0;
+  virtual scoped_refptr<cc::ContextProvider>
+      GetOffscreenContextProviderForCompositorThread() = 0;
+
  protected:
   SynchronousCompositorFactory() {}
   ~SynchronousCompositorFactory() {}

content/renderer/render_thread_impl.cc

@@ -1026,10 +1026,17 @@ RenderThreadImpl::CreateOffscreenContext3d() {
           GURL("chrome://gpu/RenderThreadImpl::CreateOffscreenContext3d")));
 }
 
-scoped_refptr<ContextProviderCommandBuffer>
+scoped_refptr<cc::ContextProvider>
 RenderThreadImpl::OffscreenContextProviderForMainThread() {
   DCHECK(IsMainThread());
 
+#if defined(OS_ANDROID)
+  if (SynchronousCompositorFactory* factory =
+      SynchronousCompositorFactory::GetInstance()) {
+    return factory->GetOffscreenContextProviderForMainThread();
+  }
+#endif
+
   if (!shared_contexts_main_thread_.get() ||
       shared_contexts_main_thread_->DestroyedOnMainThread()) {
     shared_contexts_main_thread_ =
@@ -1041,10 +1048,17 @@ RenderThreadImpl::OffscreenContextProviderForMainThread() {
   return shared_contexts_main_thread_;
 }
 
-scoped_refptr<ContextProviderCommandBuffer>
+scoped_refptr<cc::ContextProvider>
 RenderThreadImpl::OffscreenContextProviderForCompositorThread() {
   DCHECK(IsMainThread());
 
+#if defined(OS_ANDROID)
+  if (SynchronousCompositorFactory* factory =
+      SynchronousCompositorFactory::GetInstance()) {
+    return factory->GetOffscreenContextProviderForCompositorThread();
+  }
+#endif
+
   if (!shared_contexts_compositor_thread_.get() ||
       shared_contexts_compositor_thread_->DestroyedOnMainThread()) {
     shared_contexts_compositor_thread_ =

content/renderer/render_thread_impl.h

@@ -278,9 +278,9 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
   // Handle loss of the shared GpuVDAContext3D context above.
   static void OnGpuVDAContextLoss();
 
-  scoped_refptr<ContextProviderCommandBuffer>
+  scoped_refptr<cc::ContextProvider>
       OffscreenContextProviderForMainThread();
-  scoped_refptr<ContextProviderCommandBuffer>
+  scoped_refptr<cc::ContextProvider>
       OffscreenContextProviderForCompositorThread();
 
   // AudioRendererMixerManager instance which manages renderer side mixer