Fixing problem with not showing bubble

ash/wm/workspace/frame_maximize_button.cc

Index: ash/wm/workspace/frame_maximize_button.cc
diff --git a/ash/wm/workspace/frame_maximize_button.cc b/ash/wm/workspace/frame_maximize_button.cc
index 338db38f476a6bb85a6e8fe70c20f074a0d99c80..fb3f7239d05f14da72daabc10d295500f1ff89ca 100644
--- a/ash/wm/workspace/frame_maximize_button.cc
+++ b/ash/wm/workspace/frame_maximize_button.cc
@@ -196,7 +196,8 @@ bool FrameMaximizeButton::OnMousePressed(const ui::MouseEvent& event) {
   return true;
 }
 
-void FrameMaximizeButton::OnMouseEntered(const ui::MouseEvent& event) {
+void FrameMaximizeButton::OnMouseMoved(const ui::MouseEvent& event) {
+  // Note: This event only gets triggered when the mouse moves over the button.
   ImageButton::OnMouseEntered(event);

[sky, 2012/08/14 20:11:38]

ImageButton::OnMouseMoved

   if (!maximizer_.get()) {
     DCHECK(GetWidget());