mac: Add basic layout unit test for fullscreen transition.

chrome/browser/ui/cocoa/presentation_mode_controller.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.
 
 #import "chrome/browser/ui/cocoa/presentation_mode_controller.h"
 
 #include <algorithm>
 
 #include "base/command_line.h"
 #include "base/mac/sdk_forward_declarations.h"
 #import "base/mac/mac_util.h"
 #include "chrome/browser/fullscreen.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #import "chrome/browser/ui/cocoa/nsview_additions.h"
 #include "chrome/common/chrome_switches.h"
 #import "third_party/google_toolbox_for_mac/src/AppKit/GTMNSAnimation+Duration.h"
 
 NSString* const kWillEnterFullscreenNotification =
     @"WillEnterFullscreenNotification";
 NSString* const kWillLeaveFullscreenNotification =
     @"WillLeaveFullscreenNotification";
 
-@interface PresentationModeController ()
-// Sets a new current floating bar shown fraction.  NOTE: This function has side
-// effects, such as modifying the system fullscreen mode (menu bar shown state).
-- (void)changeToolbarFraction:(CGFloat)fraction;
-
-// Callback for menu bar animations.
-- (void)setMenuBarRevealProgress:(CGFloat)progress;
-@end
-
 namespace {
 
 // The activation zone for the main menu is 4 pixels high; if we make it any
 // smaller, then the menu can be made to appear without the bar sliding down.
 const CGFloat kDropdownActivationZoneHeight = 4;
 const NSTimeInterval kDropdownAnimationDuration = 0.12;
 const NSTimeInterval kMouseExitCheckDelay = 0.1;
 // This show delay attempts to match the delay for the main menu.
 const NSTimeInterval kDropdownShowDelay = 0.3;
 const NSTimeInterval kDropdownHideDelay = 0.2;
@@ skipping 709 matching lines @@
   [self updateMenuBarAndDockVisibility];
 
   // TODO(rohitrao): Remove the Exit Fullscreen button.  http://crbug.com/35956
 }
 
 - (BOOL)shouldShowMenubarInImmersiveFullscreen {
   return toolbarFraction_ >= 1.0;
 }
 
 @end