Slimming Paint phase 2 compositing algorithm plumbing & skeleton display list API.

Source/platform/graphics/GraphicsLayer.cpp

Index: Source/platform/graphics/GraphicsLayer.cpp
diff --git a/Source/platform/graphics/GraphicsLayer.cpp b/Source/platform/graphics/GraphicsLayer.cpp
index e6dbfcfa5d3ef0c9990da1cbdc53db548afa5da4..cf3780950e0a2389f001f5de9b0b6cb0aa3a9bbf 100644
--- a/Source/platform/graphics/GraphicsLayer.cpp
+++ b/Source/platform/graphics/GraphicsLayer.cpp
@@ -1112,6 +1112,11 @@ void GraphicsLayer::paint(GraphicsContext& context, const IntRect& clip)
     paintGraphicsLayerContents(context, clip);
 }
 
+void GraphicsLayer::paint(GraphicsContext& context)
+{
+    // TODO(chrishtr: fix this rect to instead derive interest rect during paint (crbug.com/486603).
+    paintGraphicsLayerContents(context, LayoutRect::infiniteIntRect());
+}
 
 void GraphicsLayer::notifyAnimationStarted(double monotonicTime, int group)
 {
@@ -1145,6 +1150,27 @@ DisplayItemList* GraphicsLayer::displayItemList()
     return m_displayItemList.get();
 }
 
+const DisplayItemTransformTree* GraphicsLayer::transformTree() const
+{
+    // Should be returning a web version of the transfor tree instead.
+    return 0;
+}
+
+void GraphicsLayer::setTransformTree(PassOwnPtr<const DisplayItemTransformTree> transformTree)
+{
+    m_transformTree = transformTree;
+}
+
+const DisplayList* GraphicsLayer::displayList() const
+{
+    return m_displayList.get();
+}
+
+void GraphicsLayer::setDisplayList(PassOwnPtr<DisplayList> displayList)
+{
+    m_displayList = displayList;
+}
+
 } // namespace blink
 
 #ifndef NDEBUG