Stop SpriteView animation when window is miniaturized.

chrome/browser/ui/cocoa/sprite_view_unittest.mm

Index: chrome/browser/ui/cocoa/sprite_view_unittest.mm
diff --git a/chrome/browser/ui/cocoa/sprite_view_unittest.mm b/chrome/browser/ui/cocoa/sprite_view_unittest.mm
index be68f19e80ae71cdfcd4bcd81c057d3cfabe8ee6..b0566f5c6bd58004f4749a74b9055e265019b968 100644
--- a/chrome/browser/ui/cocoa/sprite_view_unittest.mm
+++ b/chrome/browser/ui/cocoa/sprite_view_unittest.mm
@@ -13,6 +13,20 @@
 #include "ui/gfx/image/image.h"
 #include "ui/resources/grit/ui_resources.h"
 
+@interface SpriteView (ExposedForTesting)
+
+- (BOOL)isAnimating;
+
+@end
+
+@implementation SpriteView (ExposedForTesting)
+
+- (BOOL)isAnimating {
+  return [imageLayer_ animationForKey:[spriteAnimation_ keyPath]] != nil;
+}
+
+@end
+
 namespace {
 
 class SpriteViewTest : public CocoaTest {
@@ -41,4 +55,25 @@ TEST_F(SpriteViewTest, TestViewFrame) {
   EXPECT_EQ(imageSize.height, NSHeight(frame));
 }
 
+TEST_F(SpriteViewTest, StopAnimationOnMiniaturize) {
+  EXPECT_TRUE([view_ isAnimating]);
+
+  [test_window() miniaturize:nil];
+  EXPECT_FALSE([view_ isAnimating]);
+
+  [test_window() deminiaturize:nil];
+  EXPECT_TRUE([view_ isAnimating]);
+}
+
+TEST_F(SpriteViewTest,
+       StopAnimationOnRemoveFromSuperview) {
+  EXPECT_TRUE([view_ isAnimating]);
+
+  [view_ removeFromSuperview];
+  EXPECT_FALSE([view_ isAnimating]);
+
+  [[test_window() contentView] addSubview:view_];
+  EXPECT_TRUE([view_ isAnimating]);
+}
+
 }  // namespace