Fixed a fullscreen race condition on OSX

chrome/browser/ui/cocoa/browser_window_fullscreen_transition.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_FULLSCREEN_TRANSITION_H_
 #define CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_FULLSCREEN_TRANSITION_H_
 
 #import <Cocoa/Cocoa.h>
 
 @class FramedBrowserWindow;
 
+@protocol BrowserWindowFullscreenTransitionDelegate

[Robert Sesek, 2016/03/18 16:41:13]

Does this class always operate on a BrowserWindowController? Thoughts on passing
that to the initializer (in lieu of passing in tabStripBackgroundView and
FramedBrowserWindow)? That would mean not adding this protocol.

+
+// Called after the exit fullscreen animation is completed.
+- (void)finishedExitingFullscreen;
+
+@end
+
 // This class is responsible for managing the custom transition of a
 // BrowserWindow from its normal state into an AppKit Fullscreen state
 // and vice versa.
 //
 // By default, when AppKit Fullscreens a window, it creates a new virtual
 // desktop and slides it in from the right of the screen. At the same time, the
 // old virtual desktop slides off to the left. This animation takes one second,
 // and the time is not customizable without elevated privileges or a
 // self-modifying binary
 // (https://code.google.com/p/chromium/issues/detail?id=414527). During that
@@ skipping 72 matching lines @@
 
 @interface BrowserWindowFullscreenTransition : NSObject
 
 // Designated initializers. |window| is the NSWindow that is going to be moved
 // into a fullscreen Space (virtual desktop), and resized to have the same size
 // as the screen. |window|'s root view must be layer backed.
 // initEnterWithWindow will create a BrowserWindowFullscreenTransition that
 // enters fullscreen. initExitWithWindow will create one that exits fullscreen,
 // using |frame| as the frame that |window| is going to transition into.
 - (instancetype)initEnterWithWindow:(FramedBrowserWindow*)window;
-- (instancetype)initExitWithWindow:(FramedBrowserWindow*)window
-                             frame:(NSRect)frame
-            tabStripBackgroundView:(NSView*)view;
+- (instancetype)
+    initExitWithWindow:(FramedBrowserWindow*)window
+              delegate:(id<BrowserWindowFullscreenTransitionDelegate>)delegate
+                 frame:(NSRect)frame
+tabStripBackgroundView:(NSView*)view;
 
 // Returns the windows to be used in the custom fullscreen transition.
 - (NSArray*)customWindowsForFullScreenTransition;
 
+// Returns true if the fullscreen transition is completed.
+- (BOOL)isTransitionCompleted;
+
 // This method begins animation for exit or enter fullscreen transition.
 // In this method, the following happens:
 //   - Animates the snapshot to the expected final size of the window while
 //   fading it out.
 //   - Animates the current window from its original to final location and size
 //   while fading it in.
 // If the transition is for exiting fullscreen, we would shrink the content view
 // to the expected final size so that we can to avoid clipping from the
 // window.
 // Note: The two animations are added to different layers in different windows.
@@ skipping 11 matching lines @@
 // Returns the size of the window we expect the BrowserWindowLayout to have.
 // During the exit fullscreen transition, the content size shrinks while the
 // window frame stays the same. When that happens, we want to set the
 // BrowserWindowLayout's window parameter to the content size instead of the
 // actual window's size.
 - (NSSize)desiredWindowLayoutSize;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_BROWSER_WINDOW_FULLSCREEN_TRANSITION_H_