Add a flag to allow renderer to use software compositor when GL compositor doesn't work.

cc/test/layer_tree_test.h

 // 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.
 
 #ifndef CC_TEST_LAYER_TREE_TEST_H_
 #define CC_TEST_LAYER_TREE_TEST_H_
 
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread.h"
 #include "cc/animation/animation_delegate.h"
@@ skipping 55 matching lines @@
   virtual void DidDeferCommit() {}
   virtual bool CanActivatePendingTree(LayerTreeHostImpl* host_impl);
   virtual bool CanActivatePendingTreeIfNeeded(LayerTreeHostImpl* host_impl);
   virtual void DidSetVisibleOnImplTree(LayerTreeHostImpl* host_impl,
                                        bool visible) {}
 
   // Implementation of AnimationDelegate:
   virtual void NotifyAnimationStarted(double time) OVERRIDE {}
   virtual void NotifyAnimationFinished(double time) OVERRIDE {}
 
-  virtual scoped_ptr<OutputSurface> CreateOutputSurface() = 0;
+  virtual scoped_ptr<OutputSurface> CreateOutputSurface(bool fallback) = 0;
   virtual scoped_refptr<cc::ContextProvider>
-      OffscreenContextProviderForMainThread() = 0;
+  OffscreenContextProviderForMainThread() = 0;
   virtual scoped_refptr<cc::ContextProvider>
       OffscreenContextProviderForCompositorThread() = 0;
 };
 
 class BeginTask;
 class LayerTreeHostClientForTesting;
 class TimeoutTask;
 
 // The LayerTreeTests runs with the main loop running. It instantiates a single
 // LayerTreeHostForTesting and associated LayerTreeHostImplForTesting and
@@ skipping 60 matching lines @@
   Proxy* proxy() const {
     return layer_tree_host_ ? layer_tree_host_->proxy() : NULL;
   }
 
   bool TestEnded() const { return ended_; }
 
   LayerTreeHost* layer_tree_host() { return layer_tree_host_.get(); }
   bool delegating_renderer() const { return delegating_renderer_; }
   FakeOutputSurface* output_surface() { return output_surface_; }
 
-  virtual scoped_ptr<OutputSurface> CreateOutputSurface() OVERRIDE;
+  virtual scoped_ptr<OutputSurface> CreateOutputSurface(bool fallback) OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider>
-      OffscreenContextProviderForMainThread() OVERRIDE;
+  OffscreenContextProviderForMainThread() OVERRIDE;
   virtual scoped_refptr<cc::ContextProvider>
       OffscreenContextProviderForCompositorThread() OVERRIDE;
 
  private:
   LayerTreeSettings settings_;
   scoped_ptr<LayerTreeHostClientForTesting> client_;
   scoped_ptr<LayerTreeHost> layer_tree_host_;
   FakeOutputSurface* output_surface_;
 
   bool beginning_;
@@ skipping 64 matching lines @@
 
 #define SINGLE_AND_MULTI_THREAD_DELEGATING_RENDERER_TEST_F(TEST_FIXTURE_NAME) \
   SINGLE_THREAD_DELEGATING_RENDERER_TEST_F(TEST_FIXTURE_NAME);                \
   MULTI_THREAD_DELEGATING_RENDERER_TEST_F(TEST_FIXTURE_NAME)
 
 #define SINGLE_AND_MULTI_THREAD_TEST_F(TEST_FIXTURE_NAME) \
   SINGLE_AND_MULTI_THREAD_DIRECT_RENDERER_TEST_F(TEST_FIXTURE_NAME);    \
   SINGLE_AND_MULTI_THREAD_DELEGATING_RENDERER_TEST_F(TEST_FIXTURE_NAME)
 
 #endif  // CC_TEST_LAYER_TREE_TEST_H_