app_shell: Allow getUserMedia to select a capture device by id

extensions/shell/browser/shell_extension_host_delegate.cc

 // Copyright 2014 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.
 
 #include "extensions/shell/browser/shell_extension_host_delegate.h"
 
 #include "base/logging.h"
 #include "extensions/shell/browser/media_capture_util.h"
 #include "extensions/shell/browser/shell_extension_web_contents_observer.h"
 
@@ skipping 29 matching lines @@
                                            bool user_gesture) {
   // TODO(jamescook): Should app_shell support opening popup windows?
   NOTREACHED();
 }
 
 void ShellExtensionHostDelegate::ProcessMediaAccessRequest(
     content::WebContents* web_contents,
     const content::MediaStreamRequest& request,
     const content::MediaResponseCallback& callback,
     const Extension* extension) {
-  // Allow access to the first microphone and/or camera.
-  media_capture_util::GrantMediaStreamRequestWithFirstDevice(
+  // Allow access to the microphone and/or camera.
+  media_capture_util::GrantMediaStreamRequest(
       web_contents, request, callback, extension);
 }
 
 }  // namespace extensions