Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

chrome/browser/ui/chrome_bubble_manager.cc

+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "chrome/browser/ui/chrome_bubble_manager.h"
+
+ChromeBubbleManager::ChromeBubbleManager() {}
+
+ChromeBubbleManager::~ChromeBubbleManager() {}
+
+void ChromeBubbleManager::TabDetachedAt(content::WebContents* contents,
+                                        int index) {
+  CloseAllBubbles(BUBBLE_CLOSE_TABDETACHED);
+  // Any bubble that didn't close should update its anchor position.
+  UpdateAllBubbleAnchors();
+}
+
+void ChromeBubbleManager::TabDeactivated(content::WebContents* contents) {
+  CloseAllBubbles(BUBBLE_CLOSE_TABSWITCHED);
+}
+
+void ChromeBubbleManager::WindowFullscreenStateChanged() {
+  CloseAllBubbles(BUBBLE_CLOSE_FULLSCREEN_TOGGLED);
+  // Any bubble that didn't close should update its anchor position.
+  UpdateAllBubbleAnchors();
+}
+
+void ChromeBubbleManager::NavigationEntryCommitted() {
+  CloseAllBubbles(BUBBLE_CLOSE_NAVIGATED);
+}