Refactor Pickle Read methods to use higher performance PickleIterator.

ipc/ipc_logging.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 "ipc/ipc_logging.h"
 
 #ifdef IPC_MESSAGE_LOG_ENABLED
 #define IPC_MESSAGE_MACROS_LOG_ENABLED
 #endif
 
@@ skipping 91 matching lines @@
   queued_logs_.clear();
   sender_->Send(msg);
 }
 
 void Logging::SetIPCSender(IPC::Message::Sender* sender) {
   sender_ = sender;
 }
 
 void Logging::OnReceivedLoggingMessage(const Message& message) {
   std::vector<LogData> data;
-  void* iter = NULL;
+  PickleIterator iter(message);
   if (!ReadParam(&message, &iter, &data))
     return;
 
   for (size_t i = 0; i < data.size(); ++i) {
     Log(data[i]);
   }
 }
 
 void Logging::OnSendMessage(Message* message, const std::string& channel_id) {
   if (!Enabled())
@@ skipping 182 matching lines @@
     data->receive = message.received_time();
     data->dispatch = Time::Now().ToInternalValue();
     data->params = params;
     data->message_name = message_name;
   }
 }
 
 }
 
 #endif  // IPC_MESSAGE_LOG_ENABLED