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 70dc310a22be7693d64e27e90819bd4512f2954f..248fb9c19e8217284e45e4f9d008bd31e5628842 100644
--- a/content/browser/browser_child_process_host_impl.cc
+++ b/content/browser/browser_child_process_host_impl.cc
@@ -550,6 +550,9 @@ 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