Browser plugin: Implement loadRedirect event.

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
@@ skipping 16 matching lines @@
 // 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/notification_observer.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 "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,
+class CONTENT_EXPORT BrowserPluginGuest : public NotificationObserver,
+                                          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;
   }
 
   void set_embedder_render_process_host(
       RenderProcessHost* render_process_host) {
     embedder_render_process_host_ = render_process_host;
   }
 
+  // NotificationObserver implementation.
+  virtual void Observe(int type,
+                       const NotificationSource& source,
+                       const NotificationDetails& details) OVERRIDE;
+
   // 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.
@@ skipping 60 matching lines @@
   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_;
   }
 
   // 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);
 
+  // Called when a redirect notification occurs.
+  void LoadRedirect(const GURL& old_url,
+                    const GURL& new_url,
+                    bool is_top_level);
+
   // Static factory instance (always NULL for non-test).
   static content::BrowserPluginHostFactory* factory_;
 
+  NotificationRegistrar notification_registrar_;
   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_