Rename repaint to paintInvalidation in core/rendering/compositing.

Source/platform/graphics/GraphicsLayerClient.h

Index: Source/platform/graphics/GraphicsLayerClient.h
diff --git a/Source/platform/graphics/GraphicsLayerClient.h b/Source/platform/graphics/GraphicsLayerClient.h
index 0c42e207b60b6457066e71fef16bd9b8c0d7c414..6c8bcb433f84b751c1a31f062c91b55b10b5e91b 100644
--- a/Source/platform/graphics/GraphicsLayerClient.h
+++ b/Source/platform/graphics/GraphicsLayerClient.h
@@ -52,7 +52,7 @@ typedef unsigned GraphicsLayerPaintingPhase;
 enum {
     LayerTreeNormal = 0,
     LayerTreeIncludesDebugInfo = 1 << 0, // Dump extra debugging info like layer addresses.
-    LayerTreeIncludesRepaintRects = 1 << 1,
+    LayerTreeIncludesPaintInvalidationRects = 1 << 1,
     LayerTreeIncludesPaintingPhases = 1 << 2,
     LayerTreeIncludesRootLayer = 1 << 3,
     LayerTreeIncludesClipAndScrollParents = 1 << 4
@@ -67,7 +67,7 @@ public:
     virtual void notifyAnimationStarted(const GraphicsLayer*, double monotonicTime) = 0;
 
     virtual void paintContents(const GraphicsLayer*, GraphicsContext&, GraphicsLayerPaintingPhase, const IntRect& inClip) = 0;
-    virtual bool isTrackingRepaints() const { return false; }
+    virtual bool isTrackingPaintInvalidations() const { return false; }
 
     virtual String debugName(const GraphicsLayer*) = 0;