Remove IPC::Endpoint.

ipc/ipc_channel_reader_unittest.cc

 // Copyright 2015 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"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <limits>
@@ skipping 29 matching lines @@
   bool ShouldDispatchInputMessage(Message* msg) override { return true; }
 
   bool GetNonBrokeredAttachments(Message* msg) override { return true; }
 
   bool DidEmptyInputBuffers() override { return true; }
 
   void HandleInternalMessage(const Message& msg) override {}
 
   void DispatchMessage(Message* m) override { last_dispatched_message_ = m; }
 
-  base::ProcessId GetSenderPID() override { return base::kNullProcessId; }
-
   Message* get_last_dispatched_message() { return last_dispatched_message_; }
 
   void AppendData(const void* data, size_t size) {
     data_.append(static_cast<const char*>(data), size);
   }
 
   void AppendMessageData(const Message& message) {
     AppendData(message.data(), message.size());
   }
 
@@ skipping 181 matching lines @@
               reader.ProcessIncomingMessages());
 
     // We determined message size for the second (partial) message, so
     // we resized the buffer to fit.
     EXPECT_GE(reader.input_overflow_buf_.capacity(), message2.size());
   }
 }
 
 }  // namespace internal
 }  // namespace IPC