Refactor Pickle Read methods to use higher performance PickleIterator.

chrome/common/content_settings_pattern.h

 // 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.
 
 // Patterns used in content setting rules.
 
 #ifndef CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #define CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_
 #pragma once
 
 #include <ostream>
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 
 class GURL;
+class Pickle;
+class PickleIterator;
 
 namespace content_settings {
 class PatternParser;
 }
 
 namespace IPC {
 class Message;
 }
 
 // A pattern used in content setting rules. See |IsValid| for a description of
@@ skipping 131 matching lines @@
 
   static ContentSettingsPattern LegacyFromString(
       const std::string& pattern_spec);
 
   // Constructs an empty pattern. Empty patterns are invalid patterns. Invalid
   // patterns match nothing.
   ContentSettingsPattern();
 
   // Serializes the pattern to an IPC message or deserializes it.
   void WriteToMessage(IPC::Message* m) const;
-  bool ReadFromMessage(const IPC::Message* m, void** iter);
+  bool ReadFromMessage(const IPC::Message* m, PickleIterator* iter);
 
   // True if this is a valid pattern.
   bool IsValid() const { return is_valid_; }
 
   // True if |url| matches this pattern.
   bool Matches(const GURL& url) const;
 
   // Returns a std::string representation of this pattern.
   const std::string ToString() const;
 
@@ skipping 86 matching lines @@
 };
 
 // Stream operator so ContentSettingsPattern can be used in assertion
 // statements.
 inline std::ostream& operator<<(
     std::ostream& out, const ContentSettingsPattern& pattern) {
   return out << pattern.ToString();
 }
 
 #endif  // CHROME_COMMON_CONTENT_SETTINGS_PATTERN_H_