Implement SkImageFilter support in the compositor.

webkit/compositor_bindings/web_layer_impl.h

Index: webkit/compositor_bindings/web_layer_impl.h
diff --git a/webkit/compositor_bindings/web_layer_impl.h b/webkit/compositor_bindings/web_layer_impl.h
index 88a433f597e3cc3ffa3b9c1f82fcf59901bb0f25..a86604672c1e4624010fb47ba14654637bf31f4f 100644
--- a/webkit/compositor_bindings/web_layer_impl.h
+++ b/webkit/compositor_bindings/web_layer_impl.h
@@ -12,6 +12,9 @@ namespace cc {
 class LayerChromium;
 }
 
+// TODO(senorblanco):  Remove this once WebKit changes have landed.
+class SkImageFilter;
+
 namespace WebKit {
 
 class WebLayerImpl : public WebLayer {
@@ -57,6 +60,7 @@ public:
     virtual void setUseParentBackfaceVisibility(bool) OVERRIDE;
     virtual void setBackgroundColor(WebColor) OVERRIDE;
     virtual WebColor backgroundColor() const;
+    virtual void setFilter(SkImageFilter*);
     virtual void setFilters(const WebFilterOperations&) OVERRIDE;
     virtual void setBackgroundFilters(const WebFilterOperations&) OVERRIDE;
     virtual void setDebugBorderColor(const WebColor&) OVERRIDE;