Update cc snapshot to r127918

cc/CCRenderPass.cpp

Index: cc/CCRenderPass.cpp
diff --git a/cc/CCRenderPass.cpp b/cc/CCRenderPass.cpp
index 9990f2e3ee36ab21f080ea12bdb83c6525e29762..2f79cab0c15b63606425f273b890bc31be2b4399 100644
--- a/cc/CCRenderPass.cpp
+++ b/cc/CCRenderPass.cpp
@@ -17,19 +17,33 @@ using WebKit::WebTransformationMatrix;
 
 namespace WebCore {
 
-PassOwnPtr<CCRenderPass> CCRenderPass::create(int id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
+PassOwnPtr<CCRenderPass> CCRenderPass::create(Id id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
 {
     return adoptPtr(new CCRenderPass(id, outputRect, transformToRootTarget));
 }
 
-CCRenderPass::CCRenderPass(int id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
+CCRenderPass::CCRenderPass(Id id, IntRect outputRect, const WebKit::WebTransformationMatrix& transformToRootTarget)
     : m_id(id)
     , m_transformToRootTarget(transformToRootTarget)
     , m_outputRect(outputRect)
     , m_hasTransparentBackground(true)
     , m_hasOcclusionFromOutsideTargetSurface(false)
 {
-    ASSERT(id > 0);
+    ASSERT(id.layerId > 0);
+    ASSERT(id.index >= 0);
+}
+
+PassOwnPtr<CCRenderPass> CCRenderPass::copy(Id newId) const
+{
+    ASSERT(newId != m_id);
+
+    OwnPtr<CCRenderPass> copyPass(create(newId, m_outputRect, m_transformToRootTarget));
+    copyPass->setDamageRect(m_damageRect);
+    copyPass->setHasTransparentBackground(m_hasTransparentBackground);
+    copyPass->setHasOcclusionFromOutsideTargetSurface(m_hasOcclusionFromOutsideTargetSurface);
+    copyPass->setFilters(m_filters);
+    copyPass->setBackgroundFilters(m_backgroundFilters);
+    return copyPass.release();
 }
 
 void CCRenderPass::appendQuadsForLayer(CCLayerImpl* layer, CCOcclusionTrackerImpl* occlusionTracker, CCAppendQuadsData& appendQuadsData)