DevToolsProtocol: fix content Response::Parse.

content/browser/devtools/devtools_protocol.cc

 // Copyright (c) 2013 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/devtools/devtools_protocol.h"
 
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/stringprintf.h"
 
@@ skipping 241 matching lines @@
 }
 
 //static
 scoped_refptr<DevToolsProtocol::Response>
 DevToolsProtocol::ParseResponse(
     base::DictionaryValue* response_dict) {
   int id;
   if (!response_dict->GetInteger(kIdParam, &id))
     id = kNoId;
 
-  int error_code;
-  if (!response_dict->GetInteger(kErrorCodeParam, &error_code))
-    return new Response(id, kErrorInternalError, "Invalid response");
-
-  if (error_code) {
+  const base::DictionaryValue* error_dict;
+  if (response_dict->GetDictionary(kErrorParam, &error_dict)) {
+    int error_code = kErrorInternalError;
+    response_dict->GetInteger(kErrorCodeParam, &error_code);
     std::string error_message;
     response_dict->GetString(kErrorMessageParam, &error_message);
     return new Response(id, error_code, error_message);
   }
 
   const base::DictionaryValue* result = NULL;
   response_dict->GetDictionary(kResultParam, &result);
   return new Response(id, result ? result->DeepCopy() : NULL);
 }
 
@@ skipping 37 matching lines @@
         new Response(0, kErrorParseError, error_message);
     if (error_response)
       *error_response = response->Serialize();
     return NULL;
   }
 
   return static_cast<base::DictionaryValue*>(message.release());
 }
 
 }  // namespace content