Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

chrome/browser/ui/chrome_web_contents_observer.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_web_contents_observer.h"
+
+#include "chrome/browser/ui/chrome_bubble_manager.h"
+
+DEFINE_WEB_CONTENTS_USER_DATA_KEY(ChromeWebContentsObserver);
+
+ChromeWebContentsObserver::~ChromeWebContentsObserver() {}
+
+void ChromeWebContentsObserver::ChromeWebContentsObserver::SetBubbleManager(
+    ChromeBubbleManager* manager) {
+  manager_ = manager;
+}
+
+void ChromeWebContentsObserver::NavigationEntryCommitted(
+    const content::LoadCommittedDetails& details) {
+  manager_->NavigationEntryCommitted(web_contents(), details);
+}
+
+void ChromeWebContentsObserver::WebContentsDestroyed() {
+  manager_->WebContentsDestroyed(web_contents());
+}
+
+ChromeWebContentsObserver::ChromeWebContentsObserver(
+    content::WebContents* web_contents)
+    : content::WebContentsObserver(web_contents), manager_(nullptr) {}