cc: Give ownership of render passes to the renderer when drawing a frame.

cc/test/layer_tree_test_common.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_COMMON_H_
 #define CC_TEST_LAYER_TREE_TEST_COMMON_H_
 
 #include "base/hash_tables.h"
 #include "base/memory/ref_counted.h"
 #include "base/threading/thread.h"
@@ skipping 135 matching lines @@
 };
 
 // Adapts LayerTreeHostImpl for test. Runs real code, then invokes test hooks.
 class MockLayerTreeHostImpl : public cc::LayerTreeHostImpl {
 public:
     static scoped_ptr<MockLayerTreeHostImpl> create(TestHooks*, const cc::LayerTreeSettings&, cc::LayerTreeHostImplClient*, cc::Proxy*);
 
     virtual void beginCommit() OVERRIDE;
     virtual void commitComplete() OVERRIDE;
     virtual bool prepareToDraw(FrameData&) OVERRIDE;
-    virtual void drawLayers(const FrameData&) OVERRIDE;
+    virtual void drawLayers(FrameData&) OVERRIDE;
 
     // Make these public.
     typedef std::vector<cc::LayerImpl*> LayerList;
     using LayerTreeHostImpl::calculateRenderSurfaceLayerList;
 
 protected:
     virtual void animateLayers(base::TimeTicks monotonicTime, base::Time wallClockTime) OVERRIDE;
     virtual base::TimeDelta lowFrequencyAnimationInterval() const OVERRIDE;
 
 private:
@@ skipping 34 matching lines @@
     TEST_F(TEST_FIXTURE_NAME, runSingleThread)            \
     {                                                     \
         runTest(false);                                   \
     }                                                     \
     TEST_F(TEST_FIXTURE_NAME, runMultiThread)             \
     {                                                     \
         runTest(true);                                    \
     }
 
 #endif  // CC_TEST_LAYER_TREE_TEST_COMMON_H_