Implement SkImageFilter support in the compositor.

cc/render_pass.cc

Index: cc/render_pass.cc
diff --git a/cc/render_pass.cc b/cc/render_pass.cc
index c14a51ad21900058e9f29baf6fd9fb3e6e9b2c99..4219ac2ac127c1f9ddf6092b7dd003ccffe28623 100644
--- a/cc/render_pass.cc
+++ b/cc/render_pass.cc
@@ -7,11 +7,14 @@
 #include "cc/render_pass.h"
 
 #include "CCLayerImpl.h"
+#include "SkImageFilter.h"
 #include "cc/math_util.h"
 #include "cc/occlusion_tracker.h"
 #include "cc/quad_culler.h"
 #include "cc/shared_quad_state.h"
 #include "cc/solid_color_draw_quad.h"
+#include "cc/shared_quad_state.h"
+#include "cc/solid_color_draw_quad.h"
 
 using WebKit::WebTransformationMatrix;
 
@@ -28,6 +31,7 @@ CCRenderPass::CCRenderPass(Id id, gfx::Rect outputRect, const WebKit::WebTransfo
     , m_outputRect(outputRect)
     , m_hasTransparentBackground(true)
     , m_hasOcclusionFromOutsideTargetSurface(false)
+    , m_filter(0)
 {
     DCHECK(id.layerId > 0);
     DCHECK(id.index >= 0);
@@ -35,6 +39,7 @@ CCRenderPass::CCRenderPass(Id id, gfx::Rect outputRect, const WebKit::WebTransfo
 
 CCRenderPass::~CCRenderPass()
 {
+    SkSafeUnref(m_filter);
 }
 
 scoped_ptr<CCRenderPass> CCRenderPass::copy(Id newId) const
@@ -47,6 +52,7 @@ scoped_ptr<CCRenderPass> CCRenderPass::copy(Id newId) const
     copyPass->setHasOcclusionFromOutsideTargetSurface(m_hasOcclusionFromOutsideTargetSurface);
     copyPass->setFilters(m_filters);
     copyPass->setBackgroundFilters(m_backgroundFilters);
+    copyPass->setFilter(m_filter);
     return copyPass.Pass();
 }
 
@@ -103,4 +109,8 @@ void CCRenderPass::appendQuadsToFillScreen(CCLayerImpl* rootLayer, SkColor scree
     }
 }
 
+void CCRenderPass::setFilter(SkImageFilter* filter) {
+    SkRefCnt_SafeAssign(m_filter, filter);
+}
+
 }  // namespace cc