Move output surface fallback from cc to embedders

cc/trees/layer_tree_host_unittest_no_message_loop.cc

 // Copyright 2014 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 "base/message_loop/message_loop_proxy.h"
 #include "base/threading/simple_thread.h"
 #include "cc/layers/delegated_frame_provider.h"
 #include "cc/layers/delegated_frame_resource_collection.h"
 #include "cc/layers/delegated_renderer_layer.h"
 #include "cc/layers/layer.h"
@@ skipping 48 matching lines @@
   void DidBeginMainFrame() override {}
   void Layout() override {}
   void ApplyViewportDeltas(const gfx::Vector2d& inner_delta,
                            const gfx::Vector2d& outer_delta,
                            const gfx::Vector2dF& elastic_overscroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
                            float page_scale,
                            float top_controls_delta) override {}
-  void RequestNewOutputSurface(bool fallback) override {
+  void RequestNewOutputSurface() override {
     layer_tree_host_->SetOutputSurface(
         make_scoped_ptr<OutputSurface>(new NoMessageLoopOutputSurface));
   }
   void DidInitializeOutputSurface() override {
     did_initialize_output_surface_ = true;
   }
+  void DidFailToInitializeOutputSurface() override {}
   void WillCommit() override {}
   void DidCommit() override { did_commit_ = true; }
   void DidCommitAndDrawFrame() override { did_commit_and_draw_frame_ = true; }
   void DidCompleteSwapBuffers() override {}
 
   // LayerTreeHostSingleThreadClient overrides.
   void DidPostSwapBuffers() override {}
   void DidAbortSwapBuffers() override {}
 
   void RunTest() {
@@ skipping 145 matching lines @@
   scoped_refptr<DelegatedFrameProvider> frame_provider_;
   scoped_refptr<DelegatedRendererLayer> delegated_layer_;
 };
 
 TEST_F(LayerTreeHostNoMessageLoopDelegatedLayer, SingleDelegatedLayer) {
   RunTest();
 }
 
 }  // namespace
 }  // namespace cc