Rename repaint to paintInvalidation in core/rendering/compositing.

Source/core/rendering/compositing/CompositingState.h

Index: Source/core/rendering/compositing/CompositingState.h
diff --git a/Source/core/rendering/compositing/CompositingState.h b/Source/core/rendering/compositing/CompositingState.h
index d081d99db43e25010f4bae42954bcbe673e0b1cb..9e2cb4be95a4a467b98db5c45b5fe683c4b6c24d 100644
--- a/Source/core/rendering/compositing/CompositingState.h
+++ b/Source/core/rendering/compositing/CompositingState.h
@@ -12,7 +12,7 @@ enum CompositingState {
     NotComposited = 0,
 
     // The layer is composited, but its contents still paint into enclosing composited ancestor.
-    // In this state, repaint invalidations must be sent to the enclosing composited ancestor.
+    // In this state, paint invalidations must be sent to the enclosing composited ancestor.
     // Typically this happens when a layer's properties need to be represented in the compositor
     // output data structures, but it doesn't actually have any other reasons to be composited.
     HasOwnBackingButPaintsIntoAncestor = 1,