Add ability for a BubbleReference to update the BubbleUI.

components/bubble/bubble_manager.cc

Index: components/bubble/bubble_manager.cc
diff --git a/components/bubble/bubble_manager.cc b/components/bubble/bubble_manager.cc
index 8bbed4614bcbc9c4d532b4eb9f85102b0581a917..1af208da92c75aca7ffa7fa30a87609c7a31b3f2 100644
--- a/components/bubble/bubble_manager.cc
+++ b/components/bubble/bubble_manager.cc
@@ -87,6 +87,11 @@ void BubbleManager::UpdateAllBubbleAnchors() {
     controller->UpdateAnchorPosition();
 }
 
+bool BubbleManager::UpdateBubbleUI(BubbleReference bubble) {
+  DCHECK(thread_checker_.CalledOnValidThread());
+  return bubble->UpdateBubbleUIInternal();
+}
+
 void BubbleManager::ShowPendingBubbles() {
   if (manager_state_ == QUEUE_BUBBLES)
     manager_state_ = SHOW_BUBBLES;