FrameView now notifies ScrollCoorinator of changes in its scrollable area set

Source/core/page/scrolling/ScrollingCoordinator.h

Index: Source/core/page/scrolling/ScrollingCoordinator.h
diff --git a/Source/core/page/scrolling/ScrollingCoordinator.h b/Source/core/page/scrolling/ScrollingCoordinator.h
index 29a7e4432fb015d78f611ab8c815888107b5f89a..48e10ce7e58c7c9fc6ab154e44472fdccec4f9a5 100644
--- a/Source/core/page/scrolling/ScrollingCoordinator.h
+++ b/Source/core/page/scrolling/ScrollingCoordinator.h
@@ -66,6 +66,9 @@ public:
     void updateHaveWheelEventHandlers();
     void updateHaveScrollEventHandlers();
 
+    // Should be called whenever scroll area set changes.
+    void scrollAreaSetDidChange();

[skobes, 2015/01/07 18:56:29]

"scroll area" is slightly confusing, suggest scrollableAreaSetDidChange or
scrollableAreasDidChange for consistency.

[majidvp, 2015/01/07 19:52:28]

Acknowledged.

[majidvp, 2015/01/12 16:28:27]

Done.

+
     // Should be called whenever the slow repaint objects counter changes between zero and one.
     void frameViewHasSlowRepaintObjectsDidChange(FrameView*);