Remove flaky ShelfTooltipManagerTest.ShowTooltipWithDelay checks.

ash/shelf/shelf_tooltip_manager_unittest.cc

 // Copyright 2013 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/shelf/shelf_tooltip_manager.h"
 
 #include "ash/common/shelf/shelf_item_delegate_manager.h"
 #include "ash/common/shelf/shelf_model.h"
 #include "ash/shelf/app_list_button.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 42 matching lines @@
   tooltip_manager_->ShowTooltip(shelf_->GetAppListButton());
   EXPECT_TRUE(tooltip_manager_->IsVisible());
   EXPECT_FALSE(IsTimerRunning());
 }
 
 TEST_F(ShelfTooltipManagerTest, ShowTooltipWithDelay) {
   // ShowTooltipWithDelay should start the timer instead of showing immediately.
   tooltip_manager_->ShowTooltipWithDelay(shelf_->GetAppListButton());
   EXPECT_FALSE(tooltip_manager_->IsVisible());
   EXPECT_TRUE(IsTimerRunning());
-  RunAllPendingInMessageLoop();
-#if !defined(OS_WIN)
-  // This check fails on Windows.
-  EXPECT_TRUE(tooltip_manager_->IsVisible());
-#endif  // !OS_WIN
-  EXPECT_FALSE(IsTimerRunning());
+  // TODO: Test that the delayed tooltip is shown, without flaky failures.
 }
 
 TEST_F(ShelfTooltipManagerTest, DoNotShowForInvalidView) {
   // The manager should not show or start the timer for a null view.
   tooltip_manager_->ShowTooltip(nullptr);
   EXPECT_FALSE(tooltip_manager_->IsVisible());
   tooltip_manager_->ShowTooltipWithDelay(nullptr);
   EXPECT_FALSE(IsTimerRunning());
 
   // The manager should not show or start the timer for a non-shelf view.
@@ skipping 147 matching lines @@
 
   // Should not hide for key events.
   tooltip_manager_->ShowTooltip(shelf_->GetAppListButton());
   ASSERT_TRUE(tooltip_manager_->IsVisible());
   generator.PressKey(ui::VKEY_A, ui::EF_NONE);
   EXPECT_TRUE(tooltip_manager_->IsVisible());
 }
 
 }  // namespace test
 }  // namespace ash