Add hooks to content to request permission to connect to the PPAPI broker.

content/public/browser/web_contents_observer.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 CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 
+#include "base/callback_forward.h"
 #include "base/process_util.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/page_transition_types.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class WebContentsImpl;
 
@@ skipping 104 matching lines @@
                                        bool is_hung) {}
 
   // Invoked when the WebContents is being destroyed. Gives subclasses a chance
   // to cleanup. At the time this is invoked |web_contents()| returns NULL.
   // It is safe to delete 'this' from here.
   virtual void WebContentsDestroyed(WebContents* web_contents) {}
 
   // Called when the user agent override for a WebContents has been changed.
   virtual void UserAgentOverrideSet(const std::string& user_agent) {}
 
+  // Requests permission to access the PPAPI broker. If the object handles the
+  // request, it should return true and eventually call the passed in |callback|
+  // with the result. Otherwise it should return false, in which case the next
+  // observer will be called.
+  // Implementations should make sure not to call the callback after the
+  // WebContents has been destroyed.
+  virtual bool RequestPpapiBrokerPermission(
+      WebContents* web_contents,
+      const GURL& url,
+      const FilePath& plugin_path,
+      const base::Callback<void(bool)>& callback);
+
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // IPC::Sender implementation.
   virtual bool Send(IPC::Message* message) OVERRIDE;
   int routing_id() const;
 
  protected:
   // Use this constructor when the object is tied to a single WebContents for
   // its entire lifetime.
@@ skipping 19 matching lines @@
   void WebContentsImplDestroyed();
 
   WebContentsImpl* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_