Always notify Mojo EDK of incomplete content child process launch

content/browser/browser_child_process_host_impl.cc

Index: content/browser/browser_child_process_host_impl.cc
diff --git a/content/browser/browser_child_process_host_impl.cc b/content/browser/browser_child_process_host_impl.cc
index 5b5c7d8e0142af2c278bf569fef2b0d4012c93cd..8b4343161ded4e2d614b0ca2c778ffbe515bf9f3 100644
--- a/content/browser/browser_child_process_host_impl.cc
+++ b/content/browser/browser_child_process_host_impl.cc
@@ -549,6 +549,9 @@ void BrowserChildProcessHostImpl::OnProcessLaunched() {
   const base::Process& process = child_process_->GetProcess();
   DCHECK(process.IsValid());
 
+  if (child_connection_)
+    child_connection_->SetProcessHandle(process.Handle());
+
 #if defined(OS_WIN)
   // Start a WaitableEventWatcher that will invoke OnProcessExitedEarly if the
   // child process exits. This watcher is stopped once the IPC channel is