Revert 157650 - This is followup from Charlie's comments on Fady's cl: http://chromiumcodereview.ap…

content/browser/browser_plugin/browser_plugin_guest.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.
-
-// A BrowserPluginGuest represents the browser side of browser <--> renderer
-// communication. A BrowserPlugin (a WebPlugin) is on the renderer side of
-// browser <--> guest renderer communication. The 'guest' renderer is a
-// <browser> tag.
-//
-// BrowserPluginGuest lives on the UI thread of the browser process. It has a
-// helper, BrowserPluginGuestHelper, which is a RenderViewHostObserver. The
-// helper object receives messages (ViewHostMsg_*) directed at the browser
-// plugin and redirects them to this class. Any messages the embedder might be
-// interested in knowing or modifying about the guest should be listened for
-// here.
-//
-// Since BrowserPlugin is a WebPlugin, we need to provide overridden behaviors
-// for messages like handleInputEvent, updateGeometry. Such messages get
-// routed into BrowserPluginGuest via its embedder (BrowserPluginEmbedder).
-// These are BrowserPluginHost_* messages sent from the BrowserPlugin.
-//
-// BrowserPluginGuest knows about its embedder process. Communication to
-// renderer happens through the embedder process.
-//
-// A BrowserPluginGuest is also associated directly with the WebContents related
-// to the BrowserPlugin. BrowserPluginGuest is a WebContentsDelegate and
-// WebContentsObserver for the WebContents.
-
-#ifndef CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_
-#define CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_
-
-#include <map>
-
-#include "base/compiler_specific.h"
-#include "base/id_map.h"
-#include "base/time.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "ui/gfx/rect.h"
-#include "webkit/glue/webcursor.h"
-
-class TransportDIB;
-struct ViewHostMsg_UpdateRect_Params;
-
-namespace WebKit {
-class WebInputEvent;
-}
-
-namespace content {
-
-class BrowserPluginHostFactory;
-class BrowserPluginEmbedder;
-class RenderProcessHost;
-
-// A browser plugin guest provides functionality for WebContents to operate in
-// the guest role and implements guest specific overrides for ViewHostMsg_*
-// messages.
-//
-// BrowserPluginEmbedder is responsible for creating and destroying a guest.
-class CONTENT_EXPORT BrowserPluginGuest : public WebContentsDelegate,
-                                          public WebContentsObserver {
- public:
-  virtual ~BrowserPluginGuest();
-
-  static BrowserPluginGuest* Create(int instance_id,
-                                    WebContentsImpl* web_contents,
-                                    content::RenderViewHost* render_view_host);
-
-  // Overrides factory for testing. Default (NULL) value indicates regular
-  // (non-test) environment.
-  static void set_factory_for_testing(BrowserPluginHostFactory* factory) {
-    content::BrowserPluginGuest::factory_ = factory;
-  }
-
-  void set_guest_hang_timeout_for_testing(const base::TimeDelta& timeout) {
-    guest_hang_timeout_ = timeout;
-  }
-
-  // WebContentsObserver implementation.
-  virtual void DidCommitProvisionalLoadForFrame(
-      int64 frame_id,
-      bool is_main_frame,
-      const GURL& url,
-      PageTransition transition_type,
-      RenderViewHost* render_view_host) OVERRIDE;
-  virtual void RenderViewGone(base::TerminationStatus status) OVERRIDE;
-
-  // WebContentsDelegate implementation.
-  virtual void RendererUnresponsive(WebContents* source) OVERRIDE;
-
- private:
-  friend class BrowserPluginEmbedder;
-  friend class BrowserPluginGuestHelper;
-  friend class TestBrowserPluginGuest;
-
-  BrowserPluginGuest(int instance_id,
-                     WebContentsImpl* web_contents,
-                     RenderViewHost* render_view_host);
-
-  void set_embedder_render_process_host(
-      RenderProcessHost* render_process_host) {
-    embedder_render_process_host_ = render_process_host;
-  }
-  RenderProcessHost* embedder_render_process_host() {
-    return embedder_render_process_host_;
-  }
-  // Returns the identifier that uniquely identifies a browser plugin guest
-  // within an embedder.
-  int instance_id() const { return instance_id_; }
-  TransportDIB* damage_buffer() const { return damage_buffer_.get(); }
-  const gfx::Size& damage_view_size() const { return damage_view_size_; }
-  float damage_buffer_scale_factor() const {
-    return damage_buffer_scale_factor_;
-  }
-  void SetDamageBuffer(TransportDIB* damage_buffer,
-#if defined(OS_WIN)
-                       int damage_buffer_size,
-#endif
-                       const gfx::Size& damage_view_size,
-                       float scale_factor);
-
-  void UpdateRect(RenderViewHost* render_view_host,
-                  const ViewHostMsg_UpdateRect_Params& params);
-  void UpdateRectACK(int message_id, const gfx::Size& size);
-  // Handles input event routed through the embedder (which is initiated in the
-  // browser plugin (renderer side of the embedder)).
-  void HandleInputEvent(RenderViewHost* render_view_host,
-                        const gfx::Rect& guest_rect,
-                        const WebKit::WebInputEvent& event,
-                        IPC::Message* reply_message);
-  // Overrides default ShowWidget message so we show them on the correct
-  // coordinates.
-  void ShowWidget(RenderViewHost* render_view_host,
-                  int route_id,
-                  const gfx::Rect& initial_pos);
-  void SetCursor(const WebCursor& cursor);
-  // Handles input event acks so they are sent to browser plugin host (via
-  // embedder) instead of default view/widget host.
-  void HandleInputEventAck(RenderViewHost* render_view_host, bool handled);
-
-  // Helper to send messages to embedder. Overridden in test implementation
-  // since we want to intercept certain messages for testing.
-  virtual void SendMessageToEmbedder(IPC::Message* msg);
-  // Overridden in tests.
-  virtual void SetFocus(bool focused);
-  // Overridden in tests.
-  virtual bool ViewTakeFocus(bool reverse);
-
-  // Static factory instance (always NULL for non-test).
-  static content::BrowserPluginHostFactory* factory_;
-
-  RenderProcessHost* embedder_render_process_host_;
-  // An identifier that uniquely identifies a browser plugin guest within an
-  // embedder.
-  int instance_id_;
-  scoped_ptr<TransportDIB> damage_buffer_;
-#if defined(OS_WIN)
-  size_t damage_buffer_size_;
-#endif
-  gfx::Size damage_view_size_;
-  float damage_buffer_scale_factor_;
-  scoped_ptr<IPC::Message> pending_input_event_reply_;
-  gfx::Rect guest_rect_;
-  WebCursor cursor_;
-  IDMap<RenderViewHost> pending_updates_;
-  int pending_update_counter_;
-  base::TimeDelta guest_hang_timeout_;
-
-  DISALLOW_COPY_AND_ASSIGN(BrowserPluginGuest);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_GUEST_H_