Stop SpriteView animation when window is miniaturized.

chrome/browser/ui/cocoa/sprite_view.mm

Index: chrome/browser/ui/cocoa/sprite_view.mm
diff --git a/chrome/browser/ui/cocoa/sprite_view.mm b/chrome/browser/ui/cocoa/sprite_view.mm
index a7c31586440c84fae2177464595063743e1ff607..ab18cdf06047d10efb95d215595aca9d575f9976 100644
--- a/chrome/browser/ui/cocoa/sprite_view.mm
+++ b/chrome/browser/ui/cocoa/sprite_view.mm
@@ -73,10 +73,13 @@ static const CGFloat kFrameDuration = 0.03;  // 30ms for each animation frame.
     // 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]];
     }