Add latency measurement system

cc/software_renderer_unittest.cc

 // Copyright 2012 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/software_renderer.h"
 
 #include "cc/quad_sink.h"
 #include "cc/render_pass.h"
 #include "cc/render_pass_draw_quad.h"
 #include "cc/solid_color_draw_quad.h"
@@ skipping 28 matching lines @@
 
     // RendererClient implementation.
     virtual const gfx::Size& deviceViewportSize() const OVERRIDE { return m_viewportSize; }
     virtual const LayerTreeSettings& settings() const OVERRIDE { return m_settings; }
     virtual void didLoseOutputSurface() OVERRIDE { }
     virtual void onSwapBuffersComplete() OVERRIDE { }
     virtual void setFullRootLayerDamage() OVERRIDE { }
     virtual void setManagedMemoryPolicy(const ManagedMemoryPolicy& policy) OVERRIDE { };
     virtual void enforceManagedMemoryPolicy(const ManagedMemoryPolicy& policy) OVERRIDE { };
     virtual bool hasImplThread() const OVERRIDE { return false; }
+    virtual void onReceivedLatencyInfo(const WebKit::WebLatencyInfoImpl&) OVERRIDE { }
 
 protected:
     scoped_ptr<FakeOutputSurface> m_outputSurface;
     scoped_ptr<ResourceProvider> m_resourceProvider;
     scoped_ptr<SoftwareRenderer> m_renderer;
     gfx::Size m_viewportSize;
     LayerTreeSettings m_settings;
 };
 
 TEST_F(SoftwareRendererTest, solidColorQuad)
@@ skipping 90 matching lines @@
     renderer()->getFramebufferPixels(pixels.get(), outerRect);
 
     EXPECT_EQ(SK_ColorYELLOW, pixels[0]);
     EXPECT_EQ(SK_ColorYELLOW, pixels[outerPixels - 1]);
     EXPECT_EQ(SK_ColorCYAN, pixels[outerSize.width() + 1]);
     EXPECT_EQ(SK_ColorCYAN, pixels[outerPixels - outerSize.width() - 2]);
 }
 
 }  // namespace
 }  // namespace cc