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"
+
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/web_contents.h"
+
+ChromeBubbleManager::ChromeBubbleManager(TabStripModel* tab_strip_model)
+    : tab_strip_model_(tab_strip_model) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  DCHECK(tab_strip_model_);
+  tab_strip_model_->AddObserver(this);
+}
+
+ChromeBubbleManager::~ChromeBubbleManager() {
+  tab_strip_model_->RemoveObserver(this);
+}
+
+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::ActiveTabChanged(content::WebContents* old_contents,
+                                           content::WebContents* new_contents,
+                                           int index,
+                                           int reason) {
+  Observe(new_contents);
+}
+
+void ChromeBubbleManager::DidToggleFullscreenModeForTab(
+    bool entered_fullscreen) {
+  CloseAllBubbles(BUBBLE_CLOSE_FULLSCREEN_TOGGLED);
+  // Any bubble that didn't close should update its anchor position.
+  UpdateAllBubbleAnchors();
+}
+
+void ChromeBubbleManager::NavigationEntryCommitted(
+    const content::LoadCommittedDetails& load_details) {
+  CloseAllBubbles(BUBBLE_CLOSE_NAVIGATED);
+}