[Views] Update ink drop for omnibox icons

ui/views/animation/ink_drop_host.h

Index: ui/views/animation/ink_drop_host.h
diff --git a/ui/views/animation/ink_drop_host.h b/ui/views/animation/ink_drop_host.h
index fa77f3ede4b8155ca3c16be9f6599f514844f69d..2502ee9efe121d1e48c8df7e29e1442fa5d31ff2 100644
--- a/ui/views/animation/ink_drop_host.h
+++ b/ui/views/animation/ink_drop_host.h
@@ -39,6 +39,9 @@ class VIEWS_EXPORT InkDropHost {
   // 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.