Adds MD ink ripple animations to buttons within location bar

ui/views/bubble/bubble_delegate.cc

Index: ui/views/bubble/bubble_delegate.cc
diff --git a/ui/views/bubble/bubble_delegate.cc b/ui/views/bubble/bubble_delegate.cc
index fd922e4454789415611675a7d815c0b526a4b727..85204745ba1e5682634c8ddd2916e8a88ea0d20b 100644
--- a/ui/views/bubble/bubble_delegate.cc
+++ b/ui/views/bubble/bubble_delegate.cc
@@ -52,7 +52,13 @@ Widget* CreateBubbleWidget(BubbleDelegateView* bubble) {
 const char BubbleDelegateView::kViewClassName[] = "BubbleDelegateView";
 
 BubbleDelegateView::BubbleDelegateView()
-    : BubbleDelegateView(nullptr, BubbleBorder::TOP_LEFT) {}
+    : BubbleDelegateView(static_cast<View*>(nullptr), BubbleBorder::TOP_LEFT) {}
+
+BubbleDelegateView::BubbleDelegateView(WidgetObserverView* anchor_view,
+                                       BubbleBorder::Arrow arrow)
+    : BubbleDelegateView(static_cast<View*>(anchor_view), arrow) {
+  anchor_view_has_widget_observer_ = true;
+}
 
 BubbleDelegateView::BubbleDelegateView(View* anchor_view,
                                        BubbleBorder::Arrow arrow)
@@ -60,6 +66,7 @@ BubbleDelegateView::BubbleDelegateView(View* anchor_view,
       close_on_deactivate_(true),
       anchor_view_storage_id_(ViewStorage::GetInstance()->CreateStorageID()),
       anchor_widget_(NULL),
+      anchor_view_has_widget_observer_(false),
       arrow_(arrow),
       shadow_(BubbleBorder::SMALL_SHADOW),
       color_explicitly_set_(false),
@@ -76,8 +83,16 @@ BubbleDelegateView::BubbleDelegateView(View* anchor_view,
 }
 
 BubbleDelegateView::~BubbleDelegateView() {
-  if (GetWidget())
+  if (GetWidget()) {
     GetWidget()->RemoveObserver(this);
+    if (anchor_view_has_widget_observer_) {
+      View* anchor_view = GetAnchorView();
+      if (anchor_view) {
+        GetWidget()->RemoveObserver(
+            static_cast<WidgetObserverView*>(anchor_view));
+      }
+    }
+  }
   SetLayoutManager(NULL);
   SetAnchorView(NULL);
 }
@@ -86,7 +101,8 @@ BubbleDelegateView::~BubbleDelegateView() {
 Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate) {
   bubble_delegate->Init();
   // Get the latest anchor widget from the anchor view at bubble creation time.
-  bubble_delegate->SetAnchorView(bubble_delegate->GetAnchorView());
+  View* anchor_view = bubble_delegate->GetAnchorView();
+  bubble_delegate->SetAnchorView(anchor_view);
   Widget* bubble_widget = CreateBubbleWidget(bubble_delegate);
 
 #if defined(OS_WIN)
@@ -102,6 +118,8 @@ Widget* BubbleDelegateView::CreateBubble(BubbleDelegateView* bubble_delegate) {
 
   bubble_delegate->SizeToContents();
   bubble_widget->AddObserver(bubble_delegate);
+  if (bubble_delegate->anchor_view_has_widget_observer_)
+    bubble_widget->AddObserver(static_cast<WidgetObserverView*>(anchor_view));
   return bubble_widget;
 }
 
@@ -232,6 +250,9 @@ void BubbleDelegateView::OnNativeThemeChanged(const ui::NativeTheme* theme) {
 void BubbleDelegateView::Init() {}
 
 void BubbleDelegateView::SetAnchorView(View* anchor_view) {
+  View* previous_anchor_view = GetAnchorView();
+  if (anchor_view == previous_anchor_view)
+    return;
   // When the anchor view gets set the associated anchor widget might
   // change as well.
   if (!anchor_view || anchor_widget() != anchor_view->GetWidget()) {
@@ -248,8 +269,14 @@ void BubbleDelegateView::SetAnchorView(View* anchor_view) {
 
   // Remove the old storage item and set the new (if there is one).
   ViewStorage* view_storage = ViewStorage::GetInstance();
-  if (view_storage->RetrieveView(anchor_view_storage_id_))
+  if (previous_anchor_view) {
+    if (anchor_view_has_widget_observer_ && GetWidget()) {
+      GetWidget()->RemoveObserver(
+          static_cast<WidgetObserverView*>(previous_anchor_view));
+    }
+    anchor_view_has_widget_observer_ = false;
     view_storage->RemoveView(anchor_view_storage_id_);
+  }
   if (anchor_view)
     view_storage->StoreView(anchor_view_storage_id_, anchor_view);