Move Pickle to base namespace.

ipc/ipc_channel_proxy_unittest_messages.h

 // Copyright 2014 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_message_macros.h"
 
 // Singly-included section for enums and custom IPC traits.
 #ifndef IPC_CHANNEL_PROXY_UNITTEST_MESSAGES_H_
 #define IPC_CHANNEL_PROXY_UNITTEST_MESSAGES_H_
 
 class BadType {
  public:
   BadType() {}
 };
 
 namespace IPC {
 
 template <>
 struct ParamTraits<BadType> {
   static void Write(Message* m, const BadType& p) {}
-  static bool Read(const Message* m, PickleIterator* iter, BadType* r) {
+  static bool Read(const Message* m, base::PickleIterator* iter, BadType* r) {
     return false;
   }
   static void Log(const BadType& p, std::string* l) {}
 };
 
 }
 
 #endif  // IPC_CHANNEL_PROXY_UNITTEST_MESSAGES_H_
 
 
 #define IPC_MESSAGE_START TestMsgStart
 IPC_MESSAGE_CONTROL0(TestMsg_Bounce)
 IPC_MESSAGE_CONTROL0(TestMsg_SendBadMessage)
 IPC_MESSAGE_CONTROL1(TestMsg_BadMessage, BadType)
 
 #undef IPC_MESSAGE_START
 #define IPC_MESSAGE_START UtilityMsgStart
 IPC_MESSAGE_CONTROL0(UtilityMsg_Bounce)
 
 #undef IPC_MESSAGE_START
 #define IPC_MESSAGE_START WorkerMsgStart
 IPC_MESSAGE_CONTROL0(WorkerMsg_Bounce)
 IPC_MESSAGE_CONTROL0(WorkerMsg_Quit)