Disable failing tests on Mac 10.10 and 10.11 after swarming.

chrome/browser/ui/cocoa/spinner_view_unittest.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.
 
 #include "chrome/browser/ui/cocoa/spinner_view.h"
 
+#include "base/mac/mac_util.h"
 #import "ui/gfx/test/ui_cocoa_test_helper.h"
 
 namespace {
 
 class SpinnerViewTest : public ui::CocoaTest {
  public:
   SpinnerViewTest() {
     CGRect frame = NSMakeRect(0.0, 0.0, 16.0, 16.0);
     view_.reset([[SpinnerView alloc] initWithFrame:frame]);
     [[test_window() contentView] addSubview:view_];
   }
 
   base::scoped_nsobject<SpinnerView> view_;
 };
 
 TEST_VIEW(SpinnerViewTest, view_)
 
 TEST_F(SpinnerViewTest, StopAnimationOnMiniaturize) {
+  if (base::mac::IsOS10_10())
+    return;  // Fails when swarmed. http://crbug.com/660582
   EXPECT_TRUE([view_ isAnimating]);
 
   [test_window() miniaturize:nil];
   EXPECT_FALSE([view_ isAnimating]);
 
   [test_window() deminiaturize:nil];
   EXPECT_TRUE([view_ isAnimating]);
 }
 
 TEST_F(SpinnerViewTest, StopAnimationOnRemoveFromSuperview) {
@@ skipping 10 matching lines @@
   EXPECT_TRUE([view_ isAnimating]);
 
   [view_ setHidden:YES];
   EXPECT_FALSE([view_ isAnimating]);
 
   [view_ setHidden:NO];
   EXPECT_TRUE([view_ isAnimating]);
 }
 
 } // namespace