Change most uses of Pickle to base::Pickle

ipc/ipc_send_fds_test.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_POSIX)
 #if defined(OS_MACOSX)
 extern "C" {
 #include <sandbox.h>
@@ skipping 29 matching lines @@
 
 #if defined(OS_POSIX)
 static_assert(kNumFDsToSend ==
                   IPC::MessageAttachmentSet::kMaxDescriptorsPerMessage,
               "The number of FDs to send must be kMaxDescriptorsPerMessage.");
 #endif
 
 class MyChannelDescriptorListenerBase : public IPC::Listener {
  public:
   bool OnMessageReceived(const IPC::Message& message) override {
-    PickleIterator iter(message);
+    base::PickleIterator iter(message);
     base::FileDescriptor descriptor;
     while (IPC::ParamTraits<base::FileDescriptor>::Read(
                &message, &iter, &descriptor)) {
       HandleFD(descriptor.fd);
     }
     return true;
   }
 
  protected:
   virtual void HandleFD(int fd) = 0;
@@ skipping 312 matching lines @@
   base::WaitableEvent received_;
 };
 
 TEST_F(IPCMultiSendingFdsTest, StressTest) {
   Run();
 }
 
 }  // namespace
 
 #endif  // defined(OS_POSIX)