Update some comments/nits following r7486.

chrome/common/json_value_serializer.h

 // Copyright (c) 2006-2008 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_COMMON_JSON_VALUE_SERIALIZER_H__
 #define CHROME_COMMON_JSON_VALUE_SERIALIZER_H__
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 21 matching lines @@
 
   ~JSONStringValueSerializer();
 
   // Attempt to serialize the data structure represented by Value into
   // JSON.  If the return value is true, the result will have been written
   // into the string passed into the constructor.
   bool Serialize(const Value& root);
 
   // Attempt to deserialize the data structure encoded in the string passed
   // in to the constructor into a structure of Value objects.  If the return
-  // value is NULL and |error_message| is non-null, |error-message| will contain
+  // value is NULL and |error_message| is non-null, |error_message| will contain
   // a string describing the error.
   Value* Deserialize(std::string* error_message);
 
   void set_pretty_print(bool new_value) { pretty_print_ = new_value; }
   bool pretty_print() { return pretty_print_; }
 
   void set_allow_trailing_comma(bool new_value) {
     allow_trailing_comma_ = new_value;
   }
 
@@ skipping 24 matching lines @@
   // the file thread.
   //
   // Attempt to serialize the data structure represented by Value into
   // JSON.  If the return value is true, the result will have been written
   // into the file whose name was passed into the constructor.
   bool Serialize(const Value& root);
 
   // Attempt to deserialize the data structure encoded in the file passed
   // in to the constructor into a structure of Value objects.  If the return
   // value is NULL, and if |error_message| is non-null, |error_message| will
-  // contain a string describing the error.
+  // contain a string describing the error. The caller takes ownership of the
+  // returned value.
   Value* Deserialize(std::string* error_message);
 
  private:
   std::wstring json_file_path_;
 
   DISALLOW_EVIL_CONSTRUCTORS(JSONFileValueSerializer);
 };
 
 #endif  // CHROME_COMMON_JSON_VALUE_SERIALIZER_H__