Fix accelerated plugins rendering in Panels on Mac.

chrome/browser/ui/cocoa/chrome_browser_window.h

Index: chrome/browser/ui/cocoa/chrome_browser_window.h
diff --git a/chrome/browser/ui/cocoa/chrome_browser_window.h b/chrome/browser/ui/cocoa/chrome_browser_window.h
index 1d247e6b379edd47a17a1cec1c1bfe0407d5fb86..aa1956005d9734e03b3ee293312faea9efc8cb14 100644
--- a/chrome/browser/ui/cocoa/chrome_browser_window.h
+++ b/chrome/browser/ui/cocoa/chrome_browser_window.h
@@ -8,11 +8,11 @@
 
 #import <Cocoa/Cocoa.h>
 
-#include "chrome/browser/ui/cocoa/themed_browser_window.h"
+#import "chrome/browser/ui/cocoa/chrome_event_processing_window.h"
 
 // Common base class for chrome browser windows.  Contains methods relating to
 // hole punching that are shared between framed and fullscreen windows.
-@interface ChromeBrowserWindow : ThemedBrowserWindow {
+@interface ChromeBrowserWindow : ChromeEventProcessingWindow {
  @private
   int underlaySurfaceCount_;
 }