cc: Add support for debugging layer borders directly in the compositor

cc/layer_impl.h

Index: cc/layer_impl.h
diff --git a/cc/layer_impl.h b/cc/layer_impl.h
index f773c138e462196cc0b56acb725c3407317a57c2..4ad427e9b19d89811c15f151b1169e8cf20c6c9f 100644
--- a/cc/layer_impl.h
+++ b/cc/layer_impl.h
@@ -145,17 +145,12 @@ public:
     void setSublayerTransform(const WebKit::WebTransformationMatrix&);
     const WebKit::WebTransformationMatrix& sublayerTransform() const { return m_sublayerTransform; }
 
-    // Debug layer border - visual effect only, do not change geometry/clipping/etc.
-    void setDebugBorderColor(SkColor);
-    SkColor debugBorderColor() const { return m_debugBorderColor; }
-    void setDebugBorderWidth(float);
-    float debugBorderWidth() const { return m_debugBorderWidth; }
-    bool hasDebugBorders() const;
-
     // Debug layer name.
     void setDebugName(const std::string& debugName) { m_debugName = debugName; }
     std::string debugName() const { return m_debugName; }
 
+    bool showDebugBorders() const;
+
     RenderSurfaceImpl* renderSurface() const { return m_renderSurface.get(); }
     void createRenderSurface();
     void clearRenderSurface() { m_renderSurface.reset(); }
@@ -280,6 +275,9 @@ public:
 protected:
     explicit LayerImpl(int);
 
+    // Get the color and size of the layer's debug border.
+    virtual void getDebugBorderProperties(SkColor*, float* width) const;
+
     void appendDebugBorderQuad(QuadSink&, const SharedQuadState*, AppendQuadsData&) const;
 
     virtual void dumpLayerProperties(std::string*, int indent) const;
@@ -374,10 +372,6 @@ private:
     float m_drawOpacity;
     bool m_drawOpacityIsAnimating;
 
-    // Debug borders.
-    SkColor m_debugBorderColor;
-    float m_debugBorderWidth;
-
     // Debug layer name.
     std::string m_debugName;