Remove IPC::Endpoint.

ipc/ipc_channel_mojo.cc

Index: ipc/ipc_channel_mojo.cc
diff --git a/ipc/ipc_channel_mojo.cc b/ipc/ipc_channel_mojo.cc
index 6d00311a129db66704be8e3a050045463fef4592..e71baff895e6892d9dc36d6d0bfc44f1f159b7eb 100644
--- a/ipc/ipc_channel_mojo.cc
+++ b/ipc/ipc_channel_mojo.cc
@@ -235,6 +235,18 @@ MojoResult UnwrapAttachment(mojom::SerializedHandlePtr handle,
   return MOJO_RESULT_UNKNOWN;
 }
 
+base::ProcessId GetSelfPID() {
+#if defined(OS_LINUX)
+  if (int global_pid = Channel::GetGlobalPid())
+    return global_pid;
+#endif  // OS_LINUX
+#if defined(OS_NACL)
+  return -1;
+#else
+  return base::GetCurrentProcId();
+#endif  // defined(OS_NACL)
+}
+
 }  // namespace
 
 //------------------------------------------------------------------------------
@@ -370,29 +382,11 @@ bool ChannelMojo::Send(Message* message) {
   return message_reader_->Send(std::move(scoped_message));
 }
 
-base::ProcessId ChannelMojo::GetPeerPID() const {
-  if (!message_reader_)
-    return base::kNullProcessId;
-  return message_reader_->GetPeerPid();
-}
-
-base::ProcessId ChannelMojo::GetSelfPID() const {
-#if defined(OS_LINUX)
-  if (int global_pid = GetGlobalPid())
-    return global_pid;
-#endif  // OS_LINUX
-#if defined(OS_NACL)
-  return -1;
-#else
-  return base::GetCurrentProcId();
-#endif  // defined(OS_NACL)
-}
-
 Channel::AssociatedInterfaceSupport*
 ChannelMojo::GetAssociatedInterfaceSupport() { return this; }
 
-void ChannelMojo::OnPeerPidReceived() {
-  listener_->OnChannelConnected(static_cast<int32_t>(GetPeerPID()));
+void ChannelMojo::OnPeerPidReceived(int32_t peer_pid) {
+  listener_->OnChannelConnected(peer_pid);
 }
 
 void ChannelMojo::OnMessageReceived(const Message& message) {