Change most uses of Pickle to base::Pickle

content/renderer/service_worker/embedded_worker_context_message_filter.cc

Index: content/renderer/service_worker/embedded_worker_context_message_filter.cc
diff --git a/content/renderer/service_worker/embedded_worker_context_message_filter.cc b/content/renderer/service_worker/embedded_worker_context_message_filter.cc
index 4ecaa1716678af324bc2d8fe9389d41140ad080a..03120e1f905f029fe647560aa8d17f503a0aa961 100644
--- a/content/renderer/service_worker/embedded_worker_context_message_filter.cc
+++ b/content/renderer/service_worker/embedded_worker_context_message_filter.cc
@@ -35,7 +35,7 @@ void EmbeddedWorkerContextMessageFilter::OnFilteredMessageReceived(
 bool EmbeddedWorkerContextMessageFilter::GetWorkerThreadIdForMessage(
     const IPC::Message& msg,
     int* ipc_thread_id) {
-  return PickleIterator(msg).ReadInt(ipc_thread_id);
+  return base::PickleIterator(msg).ReadInt(ipc_thread_id);
 }
 
 }  // namespace content