Refactor Pickle Read methods to use higher performance PickleIterator.

content/common/mac/attributed_string_coder.mm

Index: content/common/mac/attributed_string_coder.mm
diff --git a/content/common/mac/attributed_string_coder.mm b/content/common/mac/attributed_string_coder.mm
index 706368d937b28e0fe94e68b5e16e25e86f01a724..78a1efb904996d8bddf3b88548cad38aa8b7d6ae 100644
--- a/content/common/mac/attributed_string_coder.mm
+++ b/content/common/mac/attributed_string_coder.mm
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -126,7 +126,7 @@ void ParamTraits<AttributedStringCoder::EncodedString>::Write(
 }
 
 bool ParamTraits<AttributedStringCoder::EncodedString>::Read(
-    const Message* m, void** iter, param_type* p) {
+    const Message* m, PickleIterator* iter, param_type* p) {
   bool success = true;
 
   string16 result;
@@ -149,7 +149,7 @@ void ParamTraits<AttributedStringCoder::FontAttribute>::Write(
 }
 
 bool ParamTraits<AttributedStringCoder::FontAttribute>::Read(
-    const Message* m, void** iter, param_type* p) {
+    const Message* m, PickleIterator* iter, param_type* p) {
   bool success = true;
 
   FontDescriptor font;