Convert CC scheduler logic to use base::TimeTicks/Delta instead of doubles

cc/CCThreadedTest.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 CCThreadedTest_h
 #define CCThreadedTest_h
 
 #include "CCLayerTreeHost.h"
 #include "CCLayerTreeHostImpl.h"
 #include "CCScopedThreadProxy.h"
@@ skipping 138 matching lines @@
     virtual void commitComplete();
     virtual bool prepareToDraw(FrameData&);
     virtual void drawLayers(const FrameData&);
 
     // Make these public.
     typedef Vector<cc::CCLayerImpl*> CCLayerList;
     using CCLayerTreeHostImpl::calculateRenderSurfaceLayerList;
 
 protected:
     virtual void animateLayers(double monotonicTime, double wallClockTime);
-    virtual double lowFrequencyAnimationInterval() const;
+    virtual base::TimeDelta lowFrequencyAnimationInterval() const;
 
 private:
     MockLayerTreeHostImpl(TestHooks*, const cc::CCLayerTreeSettings&, cc::CCLayerTreeHostImplClient*);
 
     TestHooks* m_testHooks;
 };
 
 class CompositorFakeWebGraphicsContext3DWithTextureTracking : public WebKit::CompositorFakeWebGraphicsContext3D {
 public:
     static PassOwnPtr<CompositorFakeWebGraphicsContext3DWithTextureTracking> create(Attributes);
@@ skipping 25 matching lines @@
     TEST_F(TEST_FIXTURE_NAME, runSingleThread)            \
     {                                                     \
         runTest(false);                                   \
     }                                                     \
     TEST_F(TEST_FIXTURE_NAME, runMultiThread)             \
     {                                                     \
         runTest(true);                                    \
     }
 
 #endif // CCThreadedTest_h