Remove balloon notification code. The last user was the Linux GTK port but that's deleted now.

chrome/browser/notifications/balloon_host.h

-// Copyright (c) 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.
-
-#ifndef CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
-#define CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_
-
-#include <string>
-#include <vector>
-
-#include "base/compiler_specific.h"
-#include "base/memory/scoped_ptr.h"
-#include "content/public/browser/notification_registrar.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "extensions/browser/extension_function_dispatcher.h"
-
-class Balloon;
-class Browser;
-
-namespace content {
-class SiteInstance;
-};
-
-class BalloonHost : public content::WebContentsDelegate,
-                    public content::WebContentsObserver,
-                    public extensions::ExtensionFunctionDispatcher::Delegate {
- public:
-  explicit BalloonHost(Balloon* balloon);
-
-  // Initialize the view.
-  void Init();
-
-  // Stops showing the balloon.
-  void Shutdown();
-
-  // extensions::ExtensionFunctionDispatcher::Delegate overrides.
-  virtual extensions::WindowController* GetExtensionWindowController()
-      const OVERRIDE;
-  virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
-
-  const base::string16& GetSource() const;
-
-  content::WebContents* web_contents() const { return web_contents_.get(); }
-
-  // Enable Web UI. This has to be called before renderer is created.
-  void EnableWebUI();
-
-  // Returns whether the associated render view is ready. Used only for testing.
-  bool IsRenderViewReady() const;
-
- protected:
-  virtual ~BalloonHost();
-
-  scoped_ptr<content::WebContents> web_contents_;
-
- private:
-  // content::WebContentsDelegate implementation:
-  virtual void CloseContents(content::WebContents* source) OVERRIDE;
-  virtual void HandleMouseDown() OVERRIDE;
-  virtual void ResizeDueToAutoResize(content::WebContents* source,
-                                     const gfx::Size& pref_size) OVERRIDE;
-  virtual void AddNewContents(content::WebContents* source,
-                              content::WebContents* new_contents,
-                              WindowOpenDisposition disposition,
-                              const gfx::Rect& initial_pos,
-                              bool user_gesture,
-                              bool* was_blocked) OVERRIDE;
-
-  // content::WebContentsObserver implementation:
-  virtual void RenderViewCreated(
-      content::RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewReady() OVERRIDE;
-  virtual void RenderProcessGone(base::TerminationStatus status) OVERRIDE;
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
-
-  // Message handlers
-  void OnRequest(const ExtensionHostMsg_Request_Params& params);
-
-  // Called to send an event that the balloon has been disconnected from
-  // a renderer (if should_notify_on_disconnect_ is true).
-  void NotifyDisconnect();
-
-  // Non-owned pointer to the associated balloon.
-  Balloon* balloon_;
-
-  // True after Init() has completed.
-  bool initialized_;
-
-  // Indicates whether we should notify about disconnection of this balloon.
-  // This is used to ensure disconnection notifications only happen if
-  // a connection notification has happened and that they happen only once.
-  bool should_notify_on_disconnect_;
-
-  // Site instance for the balloon/profile, to be used for opening new links.
-  scoped_refptr<content::SiteInstance> site_instance_;
-
-  // A flag to enable Web UI.
-  bool enable_web_ui_;
-
-  extensions::ExtensionFunctionDispatcher extension_function_dispatcher_;
-};
-
-#endif  // CHROME_BROWSER_NOTIFICATIONS_BALLOON_HOST_H_