Change most uses of Pickle to base::Pickle

ipc/ipc_channel_unittest.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 "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
@@ skipping 16 matching lines @@
 TEST_F(IPCChannelTest, BasicMessageTest) {
   int v1 = 10;
   std::string v2("foobar");
   base::string16 v3(base::ASCIIToUTF16("hello world"));
 
   IPC::Message m(0, 1, IPC::Message::PRIORITY_NORMAL);
   EXPECT_TRUE(m.WriteInt(v1));
   EXPECT_TRUE(m.WriteString(v2));
   EXPECT_TRUE(m.WriteString16(v3));
 
-  PickleIterator iter(m);
+  base::PickleIterator iter(m);
 
   int vi;
   std::string vs;
   base::string16 vs16;
 
   EXPECT_TRUE(iter.ReadInt(&vi));
   EXPECT_EQ(v1, vi);
 
   EXPECT_TRUE(iter.ReadString(&vs));
   EXPECT_EQ(v2, vs);
@@ skipping 146 matching lines @@
       &listener));
   CHECK(channel->Connect());
   listener.Init(channel.get());
   IPC::TestChannelListener::SendOneMessage(channel.get(), "hello from child");
 
   base::MessageLoop::current()->Run();
   return 0;
 }
 
 }  // namespace