Do not kill renderer when enumerateDevices is called from about:blank.

content/browser/renderer_host/media/media_stream_manager.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/renderer_host/media/media_stream_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 1956 matching lines @@
   std::string guid_from_raw_device_id =
       GetHMACForMediaDeviceID(salt, security_origin, raw_unique_id);
   return guid_from_raw_device_id == device_guid;
 }
 
 // static
 bool MediaStreamManager::IsOriginAllowed(int render_process_id,
                                          const url::Origin& origin) {
   if (!ChildProcessSecurityPolicyImpl::GetInstance()->CanRequestURL(
           render_process_id, origin.GetURL())) {
-    LOG(ERROR) << "MSM: Renderer requested a URL it's not allowed to use.";
+    LOG(ERROR) << "MSM: Renderer requested a URL it's not allowed to use: "
+               << origin.Serialize();
     return false;
   }
 
   return true;
 }
 
 void MediaStreamManager::SetCapturingLinkSecured(int render_process_id,
                                                  int session_id,
                                                  content::MediaStreamType type,
                                                  bool is_secure) {
@@ skipping 55 matching lines @@
     }
   }
 }
 
 void MediaStreamManager::SetGenerateStreamCallbackForTesting(
     GenerateStreamTestCallback test_callback) {
   generate_stream_test_callback_ = test_callback;
 }
 
 }  // namespace content