[Views] Update ink drop for omnibox icons

ui/views/animation/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_INK_DROP_HOST_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_HOST_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 21 matching lines @@
  public:
   InkDropHost() {}
   virtual ~InkDropHost() {}
 
   // Adds the |ink_drop_layer| in to a visible layer tree.
   virtual void AddInkDropLayer(ui::Layer* ink_drop_layer) = 0;
 
   // Removes |ink_drop_layer| from the layer tree.
   virtual void RemoveInkDropLayer(ui::Layer* ink_drop_layer) = 0;
 
+  // Called when an ink drop has started to animate.
+  virtual void InkDropAnimationStarted() {}

[bruthig, 2017/03/08 18:58:24]

To enable compos-ability this should be a function on a new InkDropObserver
class that is attached to InkDrop instances.  The Host should only be
responsible for 'hosting' the ink drop layers.  (It's currently overloaded with
the creation of them too...but that's in the backlog)

[spqchan, 2017/03/14 00:07:52]

Done, create a InkDropObserver class

+
   // Returns a configured InkDrop. In general subclasses will return an
   // InkDropImpl instance that will use the CreateInkDropRipple() and
   // CreateInkDropHighlight() methods to create the visual effects.
   //
   // Subclasses should override this if they need to configure any properties
   // specific to the InkDrop instance. e.g. the AutoHighlightMode of an
   // InkDropImpl instance.
   virtual std::unique_ptr<InkDrop> CreateInkDrop() = 0;
 
   // Creates and returns the visual effect used for press. Used by InkDropImpl
   // instances.
   virtual std::unique_ptr<InkDropRipple> CreateInkDropRipple() const = 0;
 
   // Creates and returns the visual effect used for hover and focus. Used by
   // InkDropImpl instances.
   virtual std::unique_ptr<InkDropHighlight> CreateInkDropHighlight() const = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDropHost);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_HOST_H_