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

cc/test/layer_tree_test_common.h

Index: cc/test/layer_tree_test_common.h
diff --git a/cc/test/layer_tree_test_common.h b/cc/test/layer_tree_test_common.h
index 82144bd654b85db8248f715e02d4c3cc2bb22c09..d2bafd4a3eac8f4970fc68a250ddc2053ccbea46 100644
--- a/cc/test/layer_tree_test_common.h
+++ b/cc/test/layer_tree_test_common.h
@@ -13,6 +13,8 @@
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebAnimationDelegate.h"
 
+namespace Webkit { class WebGraphicsContext3D; }
+
 namespace cc {
 class LayerImpl;
 class LayerTreeHost;
@@ -22,6 +24,9 @@ class LayerTreeHostImpl;
 // Used by test stubs to notify the test when something interesting happens.
 class TestHooks : public WebKit::WebAnimationDelegate {
 public:
+    TestHooks();
+    virtual ~TestHooks();
+
     virtual void beginCommitOnThread(LayerTreeHostImpl*) { }
     virtual void commitCompleteOnThread(LayerTreeHostImpl*) { }
     virtual bool prepareToDrawOnThread(
@@ -34,6 +39,7 @@ public:
     virtual void animate(base::TimeTicks monotonicTime) { }
     virtual void layout() { }
     virtual void didRecreateOutputSurface(bool succeeded) { }
+    virtual void willRetryRecreateOutputSurface() { }
     virtual void didAddAnimation() { }
     virtual void didCommit() { }
     virtual void didCommitAndDrawFrame() { }
@@ -46,6 +52,10 @@ public:
     virtual void notifyAnimationFinished(double time) OVERRIDE { }
 
     virtual scoped_ptr<OutputSurface> createOutputSurface();
+    virtual WebKit::WebGraphicsContext3D* OffscreenContext3dForMainThread();
+    virtual WebKit::WebGraphicsContext3D* OffscreenContext3dForCompositorThread();
+private:
+    scoped_ptr<WebKit::WebGraphicsContext3D> m_offscreenContext3d;
 };
 
 class TimeoutTask;