Add different error codes for getUserMedia.

content/browser/browser_plugin/browser_plugin_guest.cc

 // 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.
 
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 
 #include <algorithm>
 
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_util.h"
@@ skipping 161 matching lines @@
 
   virtual void RespondImpl(bool should_allow,
                            const std::string& user_input) OVERRIDE {
     WebContentsImpl* web_contents = guest_->embedder_web_contents();
     if (should_allow && web_contents) {
       // Re-route the request to the embedder's WebContents; the guest gets the
       // permission this way.
       web_contents->RequestMediaAccessPermission(request_, callback_);
     } else {
       // Deny the request.
-      callback_.Run(MediaStreamDevices(), scoped_ptr<MediaStreamUI>());
+      callback_.Run(MediaStreamDevices(),
+                    MEDIA_DEVICE_INVALID_STATE,
+                    scoped_ptr<MediaStreamUI>());
     }
   }
 
  private:
   virtual ~MediaRequest() {}
   MediaStreamRequest request_;
   MediaResponseCallback callback_;
 };
 
 class BrowserPluginGuest::NewWindowRequest : public PermissionRequest {
@@ skipping 1722 matching lines @@
                    base::Value::CreateStringValue(request_method));
   request_info.Set(browser_plugin::kURL, base::Value::CreateStringValue(url));
 
   RequestPermission(BROWSER_PLUGIN_PERMISSION_TYPE_DOWNLOAD,
                     new DownloadRequest(weak_ptr_factory_.GetWeakPtr(),
                                         callback),
                     request_info);
 }
 
 }  // namespace content