Enabled tests to control material design ink drop animations.

ui/views/animation/test/test_ink_drop_host.h

 // 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.
 
 #ifndef UI_VIEWS_ANIMATION_TEST_TEST_INK_DROP_HOST_H_
 #define UI_VIEWS_ANIMATION_TEST_TEST_INK_DROP_HOST_H_
 
 #include "base/macros.h"
 #include "ui/views/animation/ink_drop_host.h"
 
 namespace views {
 
 // A non-functional implementation of an InkDropHost that can be used during
 // tests.  Tracks the number of hosted ink drop layers.
 class TestInkDropHost : public InkDropHost {
  public:
   TestInkDropHost();
   ~TestInkDropHost() override;
 
   int num_ink_drop_layers() const { return num_ink_drop_layers_; }
 
   void set_should_show_hover(bool should_show_hover) {
     should_show_hover_ = should_show_hover;
   }
 
+  void set_disable_timers_for_test(bool disable_timers_for_test) {
+    disable_timers_for_test_ = disable_timers_for_test;
+  }
+
   // TestInkDropHost:
   void AddInkDropLayer(ui::Layer* ink_drop_layer) override;
   void RemoveInkDropLayer(ui::Layer* ink_drop_layer) override;
   std::unique_ptr<InkDropAnimation> CreateInkDropAnimation() const override;
   std::unique_ptr<InkDropHover> CreateInkDropHover() const override;
 
  private:
   int num_ink_drop_layers_;
 
   bool should_show_hover_;
 
+  // When true, the InkDropAnimation/InkDropHover instances will have their
+  // timers disabled after creation.
+  bool disable_timers_for_test_;
+
   DISALLOW_COPY_AND_ASSIGN(TestInkDropHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_TEST_TEST_INK_DROP_HOST_H_