Reland Propagate OnNativeWidgetMove to delegate/observers, etc.

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 3942c9276f5521b67f289eeb29e351bf411331e0..1fd3d4f6baee96d4d9d15673a3813beb745da795 100644
--- a/ui/views/bubble/bubble_delegate.cc
+++ b/ui/views/bubble/bubble_delegate.cc
@@ -171,19 +171,30 @@ NonClientFrameView* BubbleDelegateView::CreateNonClientFrameView(
   return new BubbleFrameView(arrow_location(), color(), margin());
 }
 
+void BubbleDelegateView::OnWidgetClosing(Widget* widget) {
+  if (anchor_view() && anchor_view()->GetWidget() == widget)
+    anchor_view_ = NULL;
+}
+
 void BubbleDelegateView::OnWidgetVisibilityChanged(Widget* widget,
                                                    bool visible) {
-  if (widget == GetWidget()) {
-    if (visible) {
-      if (border_widget_)
-        border_widget_->Show();
-      GetFocusManager()->SetFocusedView(GetInitiallyFocusedView());
-      Widget* anchor_widget = anchor_view() ? anchor_view()->GetWidget() : NULL;
-      if (anchor_widget && anchor_widget->GetTopLevelWidget())
-        anchor_widget->GetTopLevelWidget()->DisableInactiveRendering();
-    } else if (border_widget_) {
+  if (widget != GetWidget())
+    return;
+
+  Widget* anchor_widget = anchor_view() ? anchor_view()->GetWidget() : NULL;
+  if (visible) {
+    if (border_widget_)
+      border_widget_->Show();
+    if (anchor_widget)
+      anchor_widget->AddObserver(this);
+    GetFocusManager()->SetFocusedView(GetInitiallyFocusedView());
+    if (anchor_widget && anchor_widget->GetTopLevelWidget())
+      anchor_widget->GetTopLevelWidget()->DisableInactiveRendering();
+  } else {
+    if (border_widget_)
       border_widget_->Hide();
-    }
+    if (anchor_widget)
+      anchor_widget->RemoveObserver(this);
   }
 }
 
@@ -193,6 +204,11 @@ void BubbleDelegateView::OnWidgetActivationChanged(Widget* widget,
     GetWidget()->Close();
 }
 
+void BubbleDelegateView::OnWidgetMoved(Widget* widget) {
+  if (anchor_view() && anchor_view()->GetWidget() == widget)
+    SizeToContents();
+}
+
 gfx::Rect BubbleDelegateView::GetAnchorRect() {
   return anchor_view() ? anchor_view()->GetScreenBounds() : gfx::Rect();
 }