Refactor Pickle Read methods to use higher performance PickleIterator.

webkit/glue/webcursor_android.cc

 // 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.
 
 #include "webkit/glue/webcursor.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
 
 void WebCursor::InitPlatformData() {
 }
 
 bool WebCursor::SerializePlatformData(Pickle* pickle) const {
   return true;
 }
 
-bool WebCursor::DeserializePlatformData(const Pickle* pickle, void** iter) {
+bool WebCursor::DeserializePlatformData(PickleIterator* iter) {
   return true;
 }
 
 bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
   return true;
 }
 
 void WebCursor::CleanupPlatformData() {
 }
 
 void WebCursor::CopyPlatformData(const WebCursor& other) {
 }