[cc] Color evicted vs. invalidated checkerboard tiles differently

cc/ShaderChromium.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 ShaderChromium_h
 #define ShaderChromium_h
 
 #if USE(ACCELERATED_COMPOSITING)
 
 #include "SkColorPriv.h"
@@ skipping 320 matching lines @@
 
 class FragmentShaderCheckerboard {
 public:
     FragmentShaderCheckerboard();
     std::string getShaderString() const;
 
     void init(WebKit::WebGraphicsContext3D*, unsigned program, bool usingBindUniform, int* baseUniformIndex);
     int alphaLocation() const { return m_alphaLocation; }
     int texTransformLocation() const { return m_texTransformLocation; }
     int frequencyLocation() const { return m_frequencyLocation; }
+    int colorLocation() const { return m_colorLocation; }
 private:
     int m_alphaLocation;
     int m_texTransformLocation;
     int m_frequencyLocation;
+    int m_colorLocation;
 };
 
 } // namespace cc
 
 #endif // USE(ACCELERATED_COMPOSITING)
 
 #endif