[Views] Update ink drop for omnibox icons

ui/views/animation/ink_drop.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_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 28 matching lines @@
   // the only one available because it was the only InkDropState that clients
   // needed to skip animations for.
   virtual void SnapToActivated() = 0;
 
   // Enables or disables the hover state.
   virtual void SetHovered(bool is_hovered) = 0;
 
   // Enables or disables the focus state.
   virtual void SetFocused(bool is_focused) = 0;
 
+  // Returns true if the highlight should be visible based on the hover/focus
+  // status.
+  virtual bool ShouldHighlight() const = 0;

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

If we keep this function we should come up with a better name.  Something like
IsHighlighted() with clear documentation that this reports the logical highlight
state and not necessarily the visible highlight state.

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

I just realized that there's a IsHighlightFadingInOrVisible() method I could use
instead.

+
  protected:
   InkDrop() {}
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDrop);
 };
 
 // A View which can be used to parent ink drop layers. Typically this is used
 // as a non-ancestor view to labels so that the labels can paint on an opaque
 // canvas. This is used to avoid ugly text renderings when labels with subpixel
 // rendering enabled are painted onto a non-opaque canvas.
 class VIEWS_EXPORT InkDropContainerView : public views::View {
  public:
   InkDropContainerView();
 
   void AddInkDropLayer(ui::Layer* ink_drop_layer);
   void RemoveInkDropLayer(ui::Layer* ink_drop_layer);
 
   // View:
   bool CanProcessEventsWithinSubtree() const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDropContainerView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_H_