Refactor the content interface for RequestMediaAccessPermission.

content/public/browser/web_contents_delegate.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_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #pragma once
 
 #include <set>
 #include <string>
 
 #include "base/basictypes.h"
+#include "base/callback.h"
 #include "base/string16.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_type.h"
+#include "content/public/common/media_stream_request.h"
 #include "content/public/common/page_transition_types.h"
 #include "content/public/common/window_container_type.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/native_widget_types.h"
 #include "webkit/glue/window_open_disposition.h"
 
 class FilePath;
 class GURL;
 class WebContentsImpl;
 
@@ skipping 27 matching lines @@
 
 namespace webkit_glue {
 struct WebIntentData;
 struct WebIntentServiceData;
 }
 
 namespace content {
 
 struct OpenURLParams;
 
+typedef base::Callback< void(const MediaStreamDevices&) > MediaResponseCallback;
+
 // Objects implement this interface to get notified about changes in the
 // WebContents and to provide necessary functionality.
 class CONTENT_EXPORT WebContentsDelegate {
  public:
   WebContentsDelegate();
 
   // Opens a new URL inside the passed in WebContents (if source is 0 open
   // in the current front-most tab), unless |disposition| indicates the url
   // should be opened in a new tab or window.
   //
@@ skipping 327 matching lines @@
   virtual void WebUISend(WebContents* web_contents,
                          const GURL& source_url,
                          const std::string& name,
                          const base::ListValue& args) {}
 
   // Requests to lock the mouse. Once the request is approved or rejected,
   // GotResponseToLockMouseRequest() will be called on the requesting tab
   // contents.
   virtual void RequestToLockMouse(WebContents* web_contents,
                                   bool user_gesture,
-                                  bool last_unlocked_by_target) {
-  }
+                                  bool last_unlocked_by_target) {}
 
   // Notification that the page has lost the mouse lock.
   virtual void LostMouseLock() {}
 
+  // Asks permission to use the camera and/or microphone. If permission is
+  // granted, a call should be made to |callback| with the devices. If the
+  // request is denied, a call should be made to |callback| with an empty list
+  // of devices. |request| has the details of the request (e.g. which of audio
+  // and/or video devices are requested, and lists of available devices).
+  virtual void RequestMediaAccessPermission(
+      WebContents* web_contents,
+      const MediaStreamRequest* request,
+      const MediaResponseCallback& callback) {}
+
  protected:
   virtual ~WebContentsDelegate();
 
  private:
   friend class ::WebContentsImpl;
 
   // Called when |this| becomes the WebContentsDelegate for |source|.
   void Attach(WebContents* source);
 
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_