Fixes stale hover or ink ripple visuals when dragging over extension buttons

chrome/browser/ui/views/toolbar/toolbar_action_view.cc

Index: chrome/browser/ui/views/toolbar/toolbar_action_view.cc
diff --git a/chrome/browser/ui/views/toolbar/toolbar_action_view.cc b/chrome/browser/ui/views/toolbar/toolbar_action_view.cc
index e11905b73c53ffe2e8459523ec144913f83f1fbe..5e97de20ce7c8590251974c214772eb430f533b4 100644
--- a/chrome/browser/ui/views/toolbar/toolbar_action_view.cc
+++ b/chrome/browser/ui/views/toolbar/toolbar_action_view.cc
@@ -231,6 +231,10 @@ bool ToolbarActionView::OnMousePressed(const ui::MouseEvent& event) {
   return MenuButton::OnMousePressed(event);
 }
 
+void ToolbarActionView::OnMouseCaptureLost() {
+  ink_drop_delegate()->OnAction(views::InkDropState::HIDDEN);

[Devlin, 2015/12/10 22:18:22]

Why are these in ToolbarActionView, instead of CustomButton?  Won't every button
behave the same?

[varkha, 2015/12/11 02:09:43]

Done.

+}
+
 void ToolbarActionView::OnGestureEvent(ui::GestureEvent* event) {
   // While the dropdown menu is showing, the button should not handle gestures.
   if (menu_)