Fix memory leak in DevToolsProtocol::ParseCommand

chrome/browser/devtools/devtools_protocol.h

 // 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.
 
 #ifndef CHROME_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_H_
 #define CHROME_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/values.h"
 
 // Utility class for processing DevTools remote debugging messages.
 // This is a stripped down clone of content::DevTools which is not accessible
 // from chrome component (see content/browser/devtools/devtools_protocol.*).
 class DevToolsProtocol {
  public:
   class Response;
 
   class Message {
    public:
     virtual ~Message();
 
     std::string method() { return method_; }
     base::DictionaryValue* params() { return params_.get(); }
 
    protected:
-    // Takes ownership of |params|.
     Message(const std::string& method, base::DictionaryValue* params);
 
     std::string method_;
     scoped_ptr<base::DictionaryValue> params_;
 
    private:
     DISALLOW_COPY_AND_ASSIGN(Message);
   };
 
   class Command : public Message {
    public:
-    // Takes ownership of |params|.
     Command(int id, const std::string& method, base::DictionaryValue* params);
     virtual ~Command();
 
     int id() { return id_; }
     std::string Serialize();
 
     // Creates success response. Takes ownership of |result|.
     scoped_ptr<Response> SuccessResponse(base::DictionaryValue* result);
 
     // Creates error response.
@@ skipping 51 matching lines @@
   // Result ownership is passed to the caller.
   static Response* ParseResponse(const std::string& json);
 
  private:
 
   DevToolsProtocol() {}
   ~DevToolsProtocol() {}
 };
 
 #endif  // CHROME_BROWSER_DEVTOOLS_DEVTOOLS_PROTOCOL_H_