Part 1 of repairing regressions to my old clang check plugins so Nico can

chrome/common/child_process_host.cc

Index: chrome/common/child_process_host.cc
diff --git a/chrome/common/child_process_host.cc b/chrome/common/child_process_host.cc
index c1f5371f25d58a3f48a48ca624463eedfc10832f..1b6459a174e1126cc6d9b5fcfa056239c28b2ec8 100644
--- a/chrome/common/child_process_host.cc
+++ b/chrome/common/child_process_host.cc
@@ -143,6 +143,16 @@ void ChildProcessHost::InstanceCreated() {
   Notify(NotificationType::CHILD_INSTANCE_CREATED);
 }
 
+bool ChildProcessHost::OnMessageReceived(const IPC::Message& msg) {
+  return false;
+}
+
+void ChildProcessHost::OnChannelConnected(int32 peer_pid) {
+}
+
+void ChildProcessHost::OnChannelError() {
+}
+
 bool ChildProcessHost::Send(IPC::Message* message) {
   if (!channel_.get()) {
     delete message;
@@ -155,6 +165,12 @@ void ChildProcessHost::OnChildDied() {
   delete this;
 }
 
+void ChildProcessHost::ShutdownStarted() {
+}
+
+void ChildProcessHost::Notify(NotificationType type) {
+}
+
 ChildProcessHost::ListenerHook::ListenerHook(ChildProcessHost* host)
     : host_(host) {
 }