Implement pepper flash fullscreen on Mac

chrome/browser/ui/cocoa/chrome_browser_window.mm

Index: chrome/browser/ui/cocoa/chrome_browser_window.mm
diff --git a/chrome/browser/ui/cocoa/chrome_browser_window.mm b/chrome/browser/ui/cocoa/chrome_browser_window.mm
index c5f1faba56657cb1e62643d4481a96a8e02dfdd0..b0f03d6a5728486bc0e47f42de63d167794f75c8 100644
--- a/chrome/browser/ui/cocoa/chrome_browser_window.mm
+++ b/chrome/browser/ui/cocoa/chrome_browser_window.mm
@@ -10,24 +10,6 @@
 
 @implementation ChromeBrowserWindow
 
-- (void)underlaySurfaceAdded {
-  DCHECK_GE(underlaySurfaceCount_, 0);
-  ++underlaySurfaceCount_;
-
-  // We're having the OpenGL surface render under the window, so the window
-  // needs to be not opaque.
-  if (underlaySurfaceCount_ == 1)
-    [self setOpaque:NO];
-}
-
-- (void)underlaySurfaceRemoved {
-  --underlaySurfaceCount_;
-  DCHECK_GE(underlaySurfaceCount_, 0);
-
-  if (underlaySurfaceCount_ == 0)
-    [self setOpaque:YES];
-}
-
 - (ui::ThemeProvider*)themeProvider {
   id delegate = [self delegate];
   if (![delegate respondsToSelector:@selector(themeProvider)])