Enabled tests to control material design ink drop animations.

ui/views/animation/ink_drop_animation.h

 // Copyright 2016 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_INK_DROP_ANIMATION_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_H_
 
 #include "base/macros.h"
 #include "ui/gfx/geometry/point.h"
 #include "ui/views/animation/ink_drop_animation_observer.h"
 #include "ui/views/animation/ink_drop_state.h"
 #include "ui/views/views_export.h"
 
 namespace ui {
 class CallbackLayerAnimationObserver;
 class Layer;
 class LayerAnimationObserver;
 }  // namespace ui
 
 namespace views {
 
+namespace test {
+class InkDropAnimationTestApi;
+}  // namespace test
+
 // Simple base class for animations that provide visual feedback for View state.
 // Manages the attached InkDropAnimationObservers.
 //
 // TODO(bruthig): Document the ink drop ripple on chromium.org and add a link to
 // the doc here.
 class VIEWS_EXPORT InkDropAnimation {
  public:
   // TODO(bruthig): Remove UseFastAnimations() and kSlowAnimationDurationFactor.
   // See http://crbug.com/584681
 
@@ skipping 42 matching lines @@
   virtual void SnapToActivated();
 
   // The root Layer that can be added in to a Layer tree.
   virtual ui::Layer* GetRootLayer() = 0;
 
   // Returns true when the ripple is visible. This is different from checking if
   // the ink_drop_state() == HIDDEN because the ripple may be visible while it
   // animates to the target HIDDEN state.
   virtual bool IsVisible() const = 0;
 
+  // Returns a test api to access internals of this. Default implmentations
+  // should return nullptr and test specific subclasses can override to return
+  // an instance.
+  virtual test::InkDropAnimationTestApi* GetTestApi();
+
  protected:
   // Animates the ripple from the |old_ink_drop_state| to the
   // |new_ink_drop_state|. |observer| is added to all LayerAnimationSequence's
   // used if not null.
   virtual void AnimateStateChange(InkDropState old_ink_drop_state,
                                   InkDropState new_ink_drop_state,
                                   ui::LayerAnimationObserver* observer) = 0;
 
   // Updates the transforms, opacity, and visibility to a HIDDEN state.
   virtual void SetStateToHidden() = 0;
@@ skipping 19 matching lines @@
   InkDropState target_ink_drop_state_;
 
   InkDropAnimationObserver* observer_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropAnimation);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_H_