Implement a Menu Item to Hide the Toolbar in Fullscreen

chrome/browser/ui/cocoa/browser_window_controller.mm

 // Copyright 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 
 #include <cmath>
 #include <numeric>
 
 #include "base/command_line.h"
@@ skipping 1929 matching lines @@
 }
 
 - (void)updateFullscreenExitBubbleURL:(const GURL&)url
                            bubbleType:(ExclusiveAccessBubbleType)bubbleType {
   fullscreenUrl_ = url;
   exclusiveAccessBubbleType_ = bubbleType;
   [self layoutSubviews];
   [self showFullscreenExitBubbleIfNecessary];
 }
 
+- (void)toggleFullscreenToolbar {
+  shouldHideFullscreenToolbar_ = !shouldHideFullscreenToolbar_;
+
+  if ([self isInAppKitFullscreen])
+    [self updateFullscreenWithToolbar:!shouldHideFullscreenToolbar_];
+}
+
 - (BOOL)isInAnyFullscreenMode {
   return [self isInImmersiveFullscreen] || [self isInAppKitFullscreen];
 }
 
 - (BOOL)isInImmersiveFullscreen {
   return fullscreenWindow_.get() != nil || enteringImmersiveFullscreen_;
 }
 
 - (BOOL)isInAppKitFullscreen {
   return !exitingAppKitFullscreen_ &&
@@ skipping 37 matching lines @@
     [self exitImmersiveFullscreen];
 }
 
 - (BOOL)inPresentationMode {
   return presentationModeController_.get() &&
          [presentationModeController_ inPresentationMode] &&
          presentationModeController_.get().slidingStyle ==
              fullscreen_mac::OMNIBOX_TABS_HIDDEN;
 }
 
+- (BOOL)shouldHideFullscreenToolbar {
+  return shouldHideFullscreenToolbar_;
+}
+
 - (void)resizeFullscreenWindow {
   DCHECK([self isInAnyFullscreenMode]);
   if (![self isInAnyFullscreenMode])
     return;
 
   NSWindow* window = [self window];
   [window setFrame:[[window screen] frame] display:YES];
   [self layoutSubviews];
 }
 
@@ skipping 61 matching lines @@
 
 - (BOOL)supportsBookmarkBar {
   return [self supportsWindowFeature:Browser::FEATURE_BOOKMARKBAR];
 }
 
 - (BOOL)isTabbedWindow {
   return browser_->is_type_tabbed();
 }
 
 @end  // @implementation BrowserWindowController(WindowType)