Disable BubbleCreationTypesTest on Windows and Chrome OS.

ash/common/system/tray/system_tray_unittest.cc

 // Copyright (c) 2012 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 "ash/common/system/tray/system_tray.h"
 
 #include <string>
 #include <vector>
 
 #include "ash/common/accessibility_delegate.h"
@@ skipping 339 matching lines @@
   ASSERT_TRUE(detailed_item->detailed_view() != NULL);
   ASSERT_TRUE(test_item->notification_view() != NULL);
 
   // Hide the detailed view, ensure the notification view still exists.
   ASSERT_TRUE(tray->CloseSystemBubble());
   RunAllPendingInMessageLoop();
   ASSERT_TRUE(detailed_item->detailed_view() == NULL);
   ASSERT_TRUE(test_item->notification_view() != NULL);
 }
 
-TEST_F(SystemTrayTest, BubbleCreationTypesTest) {
+// Test is flaky on Win7 and Cros (crbug.com/637978).
+#if defined(OS_CHROMEOS) || defined(OS_WIN)
+#define MAYBE_BubbleCreationTypesTest DISABLED_BubbleCreationTypesTest
+#else
+#define MAYBE_BubbleCreationTypesTest BubbleCreationTypesTest
+#endif
+TEST_F(SystemTrayTest, MAYBE_BubbleCreationTypesTest) {
   SystemTray* tray = GetPrimarySystemTray();
   ASSERT_TRUE(tray->GetWidget());
 
   TestSystemTrayItem* test_item = new TestSystemTrayItem();
   tray->AddTrayItem(test_item);
 
   // Ensure the tray views are created.
   ASSERT_TRUE(test_item->tray_view() != NULL);
 
   // Show the default view, ensure the notification view is destroyed.
@@ skipping 222 matching lines @@
   // Hide the default view, ensure the tray bubble height is back to zero.
   ASSERT_TRUE(tray->CloseSystemBubble());
   RunAllPendingInMessageLoop();
 
   EXPECT_EQ(0, notification_tray->tray_bubble_height_for_test());
 }
 #endif  // OS_CHROMEOS
 
 }  // namespace test
 }  // namespace ash