[Mac] Window titles for Expose.

chrome/browser/cocoa/chrome_browser_window.mm

 // Copyright (c) 2009 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 "chrome/browser/cocoa/browser_window.h"
+#import "chrome/browser/cocoa/chrome_browser_window.h"
 
 #include "base/logging.h"
 #import "chrome/browser/cocoa/browser_window_controller.h"
 #include "chrome/browser/global_keyboard_shortcuts_mac.h"
 
 @implementation ChromeBrowserWindow
 
 - (BOOL)performKeyEquivalent:(NSEvent*)event {
   // Extract info from |event|.
   NSUInteger modifers = [event modifierFlags];
@@ skipping 12 matching lines @@
   DCHECK([controller respondsToSelector:@selector(executeCommand:)]);
 
   if (cmdNum != -1) {
     [controller executeCommand:cmdNum];
     return YES;
   }
 
   return [super performKeyEquivalent:event];
 }
 
+- (void)setShouldHideTitle:(BOOL)flag {
+  shouldHideTitle_ = flag;
+}
+
+-(BOOL)_isTitleHidden {
+  return shouldHideTitle_;
+}
+
 @end