mac: Fix bug where exiting tab fullscreen would cause Chrome menubar to disappear.

chrome/browser/ui/cocoa/browser_window_cocoa.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.
 
 #include "chrome/browser/ui/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 602 matching lines @@
 
 void BrowserWindowCocoa::Paste() {
   [NSApp sendAction:@selector(paste:) to:nil from:nil];
 }
 
 void BrowserWindowCocoa::EnterFullscreenWithChrome() {
   CHECK(chrome::mac::SupportsSystemFullscreen());
   [controller_ enterFullscreenWithChrome];
 }
 
+void BrowserWindowCocoa::EnterFullscreenWithoutChrome() {
+  CHECK(chrome::mac::SupportsSystemFullscreen());
+  [controller_ enterPresentationMode];
+}
+
 bool BrowserWindowCocoa::IsFullscreenWithChrome() {
   return IsFullscreen() && ![controller_ inPresentationMode];
 }
 
 bool BrowserWindowCocoa::IsFullscreenWithoutChrome() {
   return IsFullscreen() && [controller_ inPresentationMode];
 }
 
 WindowOpenDisposition BrowserWindowCocoa::GetDispositionForPopupBounds(
     const gfx::Rect& bounds) {
@@ skipping 73 matching lines @@
   if (browser_->bookmark_bar_state() != BookmarkBar::DETACHED)
     return 0;
   return 40;
 }
 
 void BrowserWindowCocoa::ExecuteExtensionCommand(
     const extensions::Extension* extension,
     const extensions::Command& command) {
   [cocoa_controller() executeExtensionCommand:extension->id() command:command];
 }