Use StopChildProcess instead of base::KillProcess to kill a renderer process

extensions/browser/guest_view/web_view/web_view_guest.cc

Index: extensions/browser/guest_view/web_view/web_view_guest.cc
diff --git a/extensions/browser/guest_view/web_view/web_view_guest.cc b/extensions/browser/guest_view/web_view/web_view_guest.cc
index e27039b6013c936071b622a62f2f8edb9a0e304f..a9c1684b50ad5278a339354f43851ab62ab98afa 100644
--- a/extensions/browser/guest_view/web_view/web_view_guest.cc
+++ b/extensions/browser/guest_view/web_view/web_view_guest.cc
@@ -215,8 +215,7 @@ void WebViewGuest::CreateWebContents(
   if (!base::IsStringUTF8(storage_partition_id)) {
     content::RecordAction(
         base::UserMetricsAction("BadMessageTerminate_BPGM"));
-    base::KillProcess(
-        embedder_render_process_host->GetHandle(),
+    embedder_render_process_host->FastShutdown(
         content::RESULT_CODE_KILLED_BAD_MESSAGE, false);
     callback.Run(NULL);
     return;
@@ -639,7 +638,8 @@ void WebViewGuest::Terminate() {
   base::ProcessHandle process_handle =
       web_contents()->GetRenderProcessHost()->GetHandle();
   if (process_handle)
-    base::KillProcess(process_handle, content::RESULT_CODE_KILLED, false);
+    web_contents()->GetRenderProcessHost()->FastShutdown(
+        content::RESULT_CODE_KILLED, false);
 }
 
 bool WebViewGuest::ClearData(const base::Time remove_since,