Add BubbleManager to manage bubbles and ChromeBubbleManager for events.

chrome/browser/ui/browser.cc

 // Copyright 2012 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/browser.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #include <shellapi.h>
 #endif  // defined(OS_WIN)
@@ skipping 453 matching lines @@
 Browser::~Browser() {
   // Stop observing notifications before continuing with destruction. Profile
   // destruction will unload extensions and reentrant calls to Browser:: should
   // be avoided while it is being torn down.
   registrar_.RemoveAll();
   extension_registry_observer_.RemoveAll();
 
   // The tab strip should not have any tabs at this point.
   DCHECK(tab_strip_model_->empty());
   tab_strip_model_->RemoveObserver(this);
+  bubble_manager_.reset();
 
   // Destroy the BrowserCommandController before removing the browser, so that
   // it doesn't act on any notifications that are sent as a result of removing
   // the browser.
   command_controller_.reset();
   BrowserList::RemoveBrowser(this);
 
   SessionService* session_service =
       SessionServiceFactory::GetForProfile(profile_);
   if (session_service)
@@ skipping 58 matching lines @@
   if (OkToCloseWithInProgressDownloads(&num_downloads) ==
           DOWNLOAD_CLOSE_BROWSER_SHUTDOWN &&
       !browser_defaults::kBrowserAliveWithNoWindows) {
     DownloadService::CancelAllDownloads();
   }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // Getters & Setters
 
+ChromeBubbleManager* Browser::GetBubbleManager() {
+  if (!bubble_manager_)
+    bubble_manager_.reset(new ChromeBubbleManager(tab_strip_model_.get()));
+  return bubble_manager_.get();
+}
+
 FindBarController* Browser::GetFindBarController() {
   if (!find_bar_controller_.get()) {
     FindBar* find_bar = window_->CreateFindBar();
     find_bar_controller_.reset(new FindBarController(find_bar));
     find_bar->SetFindBarController(find_bar_controller_.get());
     find_bar_controller_->ChangeWebContents(
         tab_strip_model_->GetActiveWebContents());
     find_bar_controller_->find_bar()->MoveWindowIfNecessary(gfx::Rect());
   }
   return find_bar_controller_.get();
@@ skipping 2094 matching lines @@
   if (contents && !allow_js_access) {
     contents->web_contents()->GetController().LoadURL(
         target_url,
         content::Referrer(),
         ui::PAGE_TRANSITION_LINK,
         std::string());  // No extra headers.
   }
 
   return contents != NULL;
 }