Use ink drop hover for focus states on toolbar buttons and location

ui/views/animation/ink_drop_delegate.h

Index: ui/views/animation/ink_drop_delegate.h
diff --git a/ui/views/animation/ink_drop_delegate.h b/ui/views/animation/ink_drop_delegate.h
index 545f5be0e3af2ec5d7fcdf1be0bc0530d3634bda..0bec282aaf24b086d06029e36657664ea4bc31b7 100644
--- a/ui/views/animation/ink_drop_delegate.h
+++ b/ui/views/animation/ink_drop_delegate.h
@@ -16,6 +16,8 @@ class Event;
 
 namespace views {
 
+class InkDrop;
+
 // Ink ripple animation delegate that starts and stops animations based on
 // View states and events.
 class VIEWS_EXPORT InkDropDelegate {
@@ -38,6 +40,10 @@ class VIEWS_EXPORT InkDropDelegate {
   // Returns the current InkDropState
   virtual InkDropState GetTargetInkDropState() const = 0;
 
+  // Returns the ink drop that this delegate controls. TODO(estade): remove the
+  // above pass throughs and convert callers to using this function.
+  virtual InkDrop* GetInkDrop() = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(InkDropDelegate);
 };