Fix Fullscreen Animation Crash

chrome/browser/ui/cocoa/browser_window_fullscreen_transition.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/browser_window_fullscreen_transition.h"
 
 #include <QuartzCore/QuartzCore.h>
 
 #include "base/mac/bind_objc_block.h"
 #include "base/mac/foundation_util.h"
@@ skipping 506 matching lines @@
     DCHECK_EQ(NSWidth(content.frame), expectedSize.width);
 
     // Restore the state of the primary window and make it visible again.
     [primaryWindow_ setOpaque:primaryWindowInitialOpaque_];
     [primaryWindow_ setBackgroundColor:primaryWindowInitialBackgroundColor_];
 
     CALayer* root = [self rootLayerOfWindow:primaryWindow_];
     [root removeAnimationForKey:kPrimaryWindowAnimationID];
     root.opacity = 1;
 
+    completedTransition_ = YES;
+
     if (!isEnteringFullscreen_)
       [controller_ exitFullscreenAnimationFinished];
   }
-
-  completedTransition_ = YES;
 }
 
 - (CALayer*)rootLayerOfWindow:(NSWindow*)window {
   return [[[window contentView] superview] layer];
 }
 
 - (NSPoint)pointRelativeToCurrentScreen:(NSPoint)point {
   NSRect screenFrame = [[primaryWindow_ screen] frame];
   return NSMakePoint(point.x - screenFrame.origin.x,
                      point.y - screenFrame.origin.y);
 }
 
 @end