cc: Remove the capability to give up and leave compositing mode.

cc/layers/tiled_layer_unittest.cc

 // Copyright 2011 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 "cc/layers/tiled_layer.h"
 
 #include <limits>
 #include <vector>
 
 #include "base/run_loop.h"
@@ skipping 50 matching lines @@
 
   bool EnsureOutputSurfaceCreated() {
     base::MessageLoop::current()->PostDelayedTask(
         FROM_HERE,
         run_loop_.QuitClosure(),
         base::TimeDelta::FromSeconds(5));
     run_loop_.Run();
     return output_surface_created_;
   }
 
-  virtual CreateResult OnCreateAndInitializeOutputSurfaceAttempted(
+  virtual void OnCreateAndInitializeOutputSurfaceAttempted(
       bool success) OVERRIDE {
-    CreateResult result =
-        LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted(success);
+    LayerTreeHost::OnCreateAndInitializeOutputSurfaceAttempted(success);
     output_surface_created_ = success;
     run_loop_.Quit();
-    return result;
   }
 
  private:
   SynchronousOutputSurfaceLayerTreeHost(
       LayerTreeHostClient* client,
       SharedBitmapManager* manager,
       const LayerTreeSettings& settings,
       scoped_refptr<base::SingleThreadTaskRunner> impl_task_runner)
       : LayerTreeHost(client, manager, settings),
         output_surface_created_(false) {
@@ skipping 1728 matching lines @@
   // Invalidate the entire layer in layer space. When painting, the rect given
   // to webkit should match the layer's bounds.
   layer->SetNeedsDisplayRect(layer_rect);
   layer->Update(queue_.get(), NULL);
 
   EXPECT_RECT_EQ(layer_rect, layer->tracking_layer_painter()->PaintedRect());
 }
 
 }  // namespace
 }  // namespace cc