[Views] Update ink drop for omnibox icons

ui/views/controls/button/custom_button.h

 // 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.
 
 #ifndef UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 #define UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 133 matching lines @@
   // Invoked from SetState() when SetState() is passed a value that differs from
   // the current node_data. CustomButton's implementation of StateChanged() does
   // nothing; this method is provided for subclasses that wish to do something
   // on state changes.
   virtual void StateChanged(ButtonState old_state);
 
   // Returns true if the event is one that can trigger notifying the listener.
   // This implementation returns true if the left mouse button is down.
   virtual bool IsTriggerableEvent(const ui::Event& event);
 
+  // Returns true if the ink drop should be updated by CustomButton when
+  // OnClickCanceled() is called. This method is provided for subclasses.
+  // If the method is overriden and returns false, the subclass is responsible
+  // will be responsible for updating the ink drop.
+  virtual bool ShouldUpdateInkDropOnClickCanceled() const;
+
   // Returns true if the button should become pressed when the user
   // holds the mouse down over the button. For this implementation,
   // we simply return IsTriggerableEvent(event).
   virtual bool ShouldEnterPushedState(const ui::Event& event);
 
   // Returns true if the button should enter hovered state; that is, if the
   // mouse is over the button, and no other window has capture (which would
   // prevent the button from receiving MouseExited events and updating its
   // node_data). This does not take into account enabled node_data.
   bool ShouldEnterHoveredState();
@@ skipping 36 matching lines @@
 
   // The color of the ripple and hover.
   SkColor ink_drop_base_color_;
 
   DISALLOW_COPY_AND_ASSIGN(CustomButton);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_CONTROLS_BUTTON_CUSTOM_BUTTON_H_