Implement SkImageFilter support in the compositor.

cc/render_pass.h

Index: cc/render_pass.h
diff --git a/cc/render_pass.h b/cc/render_pass.h
index 7a15df18cbf4fd91cb5a8913963094f1a3df7549..4b6daa348b2a5028e70c90ec7e47dee9a2387b26 100644
--- a/cc/render_pass.h
+++ b/cc/render_pass.h
@@ -17,6 +17,8 @@
 #include <public/WebTransformationMatrix.h>
 #include <vector>
 
+class SkImageFilter;
+
 namespace cc {
 
 class CCLayerImpl;
@@ -90,6 +92,9 @@ public:
     const WebKit::WebFilterOperations& backgroundFilters() const { return m_backgroundFilters; }
     void setBackgroundFilters(const WebKit::WebFilterOperations& filters) { m_backgroundFilters = filters; }
 
+    SkImageFilter* filter() const { return m_filter; }

[danakj, 2012/10/19 19:34:24]

can we rename this to imageFilter()?

+    void setFilter(SkImageFilter* filter);
+
     bool hasTransparentBackground() const { return m_hasTransparentBackground; }
     void setHasTransparentBackground(bool transparent) { m_hasTransparentBackground = transparent; }
 
@@ -108,6 +113,7 @@ protected:
     bool m_hasOcclusionFromOutsideTargetSurface;
     WebKit::WebFilterOperations m_filters;
     WebKit::WebFilterOperations m_backgroundFilters;
+    SkImageFilter* m_filter;
 
     DISALLOW_COPY_AND_ASSIGN(CCRenderPass);
 };