Stop SpriteView animation when window is miniaturized.

chrome/browser/ui/cocoa/sprite_view.mm

 // Copyright 2014 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/sprite_view.h"
 
 #import <QuartzCore/CAAnimation.h>
 #import <QuartzCore/CATransaction.h>
 
 #include "base/logging.h"
@@ skipping 55 matching lines @@
 
 - (void)viewDidMoveToWindow {
   [self updateAnimation:nil];
 }
 
 - (void)updateAnimation:(NSNotification*)notification {
   if (spriteAnimation_.get()) {
     // Only animate the sprites if we are attached to a window, and that window
     // is not currently minimized or in the middle of a minimize animation.
     // http://crbug.com/350329
-    if ([self window] && ![[self window] isMiniaturized]) {
-      if ([imageLayer_ animationForKey:[spriteAnimation_ keyPath]] == nil)
+    if ([self window] && ![[self window] isMiniaturized] &&

[Andre, 2015/04/02 21:25:52]

This checks if the window is miniaturized. I think the problem is that when
NSWindowWillMiniaturize is invoked, -isMiniaturized is not yet YES.

+        ![[notification name] isEqualToString:
+             NSWindowWillMiniaturizeNotification]) {
+      if ([imageLayer_ animationForKey:[spriteAnimation_ keyPath]] == nil) {
         [imageLayer_ addAnimation:spriteAnimation_.get()
                      forKey:[spriteAnimation_ keyPath]];
+      }
     } else {
       [imageLayer_ removeAnimationForKey:[spriteAnimation_ keyPath]];
     }
   }
 }
 
 - (void)setImage:(NSImage*)image {
   ScopedCAActionDisabler disabler;
 
   if (spriteAnimation_.get()) {
@@ skipping 70 matching lines @@
   }
 }
 
 - (BOOL)layer:(CALayer*)layer
     shouldInheritContentsScale:(CGFloat)scale
                     fromWindow:(NSWindow*)window {
   return YES;
 }
 
 @end