Mac: Well-behaved accelerated plugins, actual fix

chrome/browser/cocoa/chrome_browser_window.h

Index: chrome/browser/cocoa/chrome_browser_window.h
diff --git a/chrome/browser/cocoa/chrome_browser_window.h b/chrome/browser/cocoa/chrome_browser_window.h
index e6366fd77a1154c6a2ce96cf093ad531be5c9903..810c87fbe8201e14d2c50e0dae0e4bd30edffc9b 100644
--- a/chrome/browser/cocoa/chrome_browser_window.h
+++ b/chrome/browser/cocoa/chrome_browser_window.h
@@ -38,6 +38,7 @@ const NSInteger kChromeWindowButtonsInterButtonSpacing = 7;
   NSButton* zoomButton_;
   BOOL entered_;
   scoped_nsobject<NSTrackingArea> widgetTrackingArea_;
+  int underlaySurfaceCount_;
 }
 
 // Tells the window to suppress title drawing.
@@ -50,6 +51,11 @@ const NSInteger kChromeWindowButtonsInterButtonSpacing = 7;
 // Update the tracking areas for our window widgets as appropriate.
 - (void)updateTrackingAreas;
 
+// Informs the window that an underlay surface has been added/removed. The
+// window is non-opaque while underlay surfaces are present.
+- (void)underlaySurfaceAdded;
+- (void)underlaySurfaceRemoved;
+
 @end
 
 @interface NSWindow (UndocumentedAPI)