Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

chrome/browser/ui/chrome_web_contents_observer.h

+// 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.
+
+#ifndef CHROME_BROWSER_UI_CHROME_WEB_CONTENTS_OBSERVER_H_
+#define CHROME_BROWSER_UI_CHROME_WEB_CONTENTS_OBSERVER_H_
+
+#include "content/public/browser/web_contents_observer.h"
+#include "content/public/browser/web_contents_user_data.h"
+
+class ChromeBubbleManager;
+
+class ChromeWebContentsObserver

[hcarmona, 2015/08/06 17:43:44]

Move this to anon. namespace in chrome bubble manager.

+    : public content::WebContentsObserver,
+      public content::WebContentsUserData<ChromeWebContentsObserver> {
+ public:
+  ~ChromeWebContentsObserver() override;
+
+  void SetBubbleManager(ChromeBubbleManager* manager);
+
+  // WebContentsObserver:
+  void NavigationEntryCommitted(
+      const content::LoadCommittedDetails& details) override;
+  void WebContentsDestroyed() override;
+
+ private:
+  friend class content::WebContentsUserData<ChromeWebContentsObserver>;
+
+  explicit ChromeWebContentsObserver(content::WebContents* web_contents);
+
+  // Weak.
+  ChromeBubbleManager* manager_;
+};
+
+#endif  // CHROME_BROWSER_UI_CHROME_WEB_CONTENTS_OBSERVER_H_