Fix window shadows.

content/browser/renderer_host/accelerated_plugin_view_mac.mm

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "content/browser/renderer_host/accelerated_plugin_view_mac.h"
 
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 162 matching lines @@
 
 // TODO(jbates): is lockFocus needed anymore? it seems redundant with
 //               setUpGState in traces.
 - (void)lockFocus {
   TRACE_EVENT0("browser", "AcceleratedPluginView::lockFocus");
   [super lockFocus];
   [self prepareForGLRendering];
   [glContext_ makeCurrentContext];
 }
 
-- (void)viewWillMoveToWindow:(NSWindow*)newWindow {
-  TRACE_EVENT1("browser", "AcceleratedPluginView::viewWillMoveToWindow",
-               "newWindow", newWindow);
-  // Inform the window hosting this accelerated view that it needs to be
-  // transparent.
-  if (![self isHiddenOrHasHiddenAncestor]) {
-    if ([[self window] conformsToProtocol:@protocol(UnderlayableSurface)]) {
-      [static_cast<id<UnderlayableSurface> >([self window])
-          underlaySurfaceRemoved];
-    }
-    if ([newWindow conformsToProtocol:@protocol(UnderlayableSurface)])
-      [static_cast<id<UnderlayableSurface> >(newWindow) underlaySurfaceAdded];
-  }
-}
-
-- (void)viewDidHide {
-  TRACE_EVENT0("browser", "AcceleratedPluginView::viewDidHide");
-  [super viewDidHide];
-
-  if ([[self window] conformsToProtocol:@protocol(UnderlayableSurface)]) {
-    [static_cast<id<UnderlayableSurface> >([self window])
-        underlaySurfaceRemoved];
-  }
-}
-
 - (void)viewDidUnhide {
   TRACE_EVENT0("browser", "AcceleratedPluginView::viewDidUnhide");
   [super viewDidUnhide];
 
   // Delay context creation until view unhide, see http://crbug.com/109151
   if (renderWidgetHostView_ && !glContext_) {
     [self initOpenGLContext];
   }
-
-  if ([[self window] conformsToProtocol:@protocol(UnderlayableSurface)]) {
-    [static_cast<id<UnderlayableSurface> >([self window]) underlaySurfaceAdded];
-  }
 }
 
 - (BOOL)acceptsFirstResponder {
   // Accept first responder if the first responder isn't the RWHVMac, and if the
   // RWHVMac accepts first responder.  If the RWHVMac does not accept first
   // responder, do not accept on its behalf.
   return ([[self window] firstResponder] != [self superview] &&
           [[self superview] acceptsFirstResponder]);
 }
 
@@ skipping 47 matching lines @@
   // Draw at beam vsync.
   GLint swapInterval;
   if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kDisableGpuVsync))
     swapInterval = 0;
   else
     swapInterval = 1;
   [glContext_ setValues:&swapInterval forParameter:NSOpenGLCPSwapInterval];
 }
 
 @end  // @implementation AcceleratedPluginView(Private)