Merge 133595 - ash: Fix transparency glitches in window header

ash/wm/frame_painter.h

Index: ash/wm/frame_painter.h
===================================================================
--- ash/wm/frame_painter.h	(revision 133684)
+++ ash/wm/frame_painter.h	(working copy)
@@ -107,6 +107,8 @@
   virtual void OnWindowPropertyChanged(aura::Window* window,
                                        const void* key,
                                        intptr_t old) OVERRIDE;
+  virtual void OnWindowVisibilityChanged(aura::Window* window,
+                                         bool visible) OVERRIDE;
   virtual void OnWindowDestroying(aura::Window* window) OVERRIDE;
 
  private:
@@ -127,6 +129,11 @@
   // window header.
   static bool UseSoloWindowHeader();
 
+  // Schedules a paint for the window header of the solo window.  Invoke this
+  // when another window is hidden or destroyed to force the transparency of
+  // the now-solo window to update.
+  static void SchedulePaintForSoloWindow();
+
   static std::set<FramePainter*>* instances_;
 
   // Not owned