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

ui/views/animation/ink_drop_impl.cc

Index: ui/views/animation/ink_drop_impl.cc
diff --git a/ui/views/animation/ink_drop_impl.cc b/ui/views/animation/ink_drop_impl.cc
index cce475b58b571bd75a16da0ed910792193c339bb..30fa13be093620c2576a9babfb9a11fea732dc6e 100644
--- a/ui/views/animation/ink_drop_impl.cc
+++ b/ui/views/animation/ink_drop_impl.cc
@@ -110,6 +110,11 @@ void InkDropImpl::SetHovered(bool is_hovered) {
                      false);
 }
 
+void InkDropImpl::SnapToHovered(bool is_hovered) {

[Evan Stade, 2016/05/24 18:47:18]

I specifically avoided turning |is_hovered_| into a counter, with the outcome
that if you mouse over a button while it's focused, then unhover, the focus
shadow goes away. I actually believe this makes more sense because the focus
effect is supposed to be for people using the keyboard. Hence,
request_focus_on_press_ for buttons is almost always false. If you use the
keyboard, then switch to the mouse, it makes sense to stop showing the hover
effect. (Honestly I think this is rare enough that it doesn't matter much one
way or another.)

+  is_hovered_ = is_hovered;
+  SetHoveredInternal(is_hovered, base::TimeDelta(), false);
+}
+
 void InkDropImpl::DestroyHiddenTargetedAnimations() {
   if (ink_drop_ripple_ &&
       (ink_drop_ripple_->target_ink_drop_state() == InkDropState::HIDDEN ||