cc: Route offscreen context creation for compositor to the browser.

ui/compositor/compositor.cc

Index: ui/compositor/compositor.cc
diff --git a/ui/compositor/compositor.cc b/ui/compositor/compositor.cc
index 9e7c4d54496ee96db23b3253c0519a9e2c6d90a8..b55c43ab6f867238a93ca06226581aa27b383983 100644
--- a/ui/compositor/compositor.cc
+++ b/ui/compositor/compositor.cc
@@ -163,6 +163,26 @@ WebKit::WebGraphicsContext3D* DefaultContextFactory::CreateOffscreenContext() {
   return CreateContextCommon(NULL, true);
 }
 
+WebKit::WebGraphicsContext3D* DefaultContextFactory::
+    OffscreenContextForMainThread() {
+  return NULL;
+}
+
+WebKit::WebGraphicsContext3D* DefaultContextFactory::
+    OffscreenContextForCompositorThread() {
+  return NULL;
+}
+
+GrContext* DefaultContextFactory::
+    OffscreenGrContextForMainThread() {
+  return NULL;
+}
+
+GrContext* DefaultContextFactory::
+    OffscreenGrContextForCompositorThread() {
+  return NULL;
+}
+
 void DefaultContextFactory::RemoveCompositor(Compositor* compositor) {
 }
 
@@ -521,6 +541,40 @@ scoped_ptr<cc::OutputSurface> Compositor::createOutputSurface() {
 void Compositor::didRecreateOutputSurface(bool success) {
 }
 
+WebKit::WebGraphicsContext3D*
+    Compositor::offscreenContext3dForMainThread() {
+  // TODO(danakj): Create an OffscreenContext out of a TestWebGraphicsContext3D
+  // and store it somewhere so we can get the GrContext out of it too.
+  if (g_test_compositor_enabled)
+    return NULL;
+  return ContextFactory::GetInstance()->
+      OffscreenContextForMainThread();
+}
+
+WebKit::WebGraphicsContext3D*
+    Compositor::offscreenContext3dForCompositorThread() {
+  // TODO(danakj): Create an OffscreenContext out of a TestWebGraphicsContext3D
+  // and store it somewhere so we can get the GrContext out of it too.
+  if (g_test_compositor_enabled)
+    return NULL;
+  return ContextFactory::GetInstance()->
+      OffscreenContextForCompositorThread();
+}
+
+GrContext* Compositor::offscreenGrContextForMainThread() {
+  if (g_test_compositor_enabled)
+    return NULL;
+  return ContextFactory::GetInstance()->
+      OffscreenGrContextForMainThread();
+}
+
+GrContext* Compositor::offscreenGrContextForCompositorThread() {
+  if (g_test_compositor_enabled)
+    return NULL;
+  return ContextFactory::GetInstance()->
+      OffscreenGrContextForCompositorThread();
+}
+
 scoped_ptr<cc::InputHandler> Compositor::createInputHandler() {
   return scoped_ptr<cc::InputHandler>();
 }