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

chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc

Index: chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc
diff --git a/chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc b/chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc
index c5e3ac6a14a3c48dcdc9470913d7a3ed6c28c488..3bf775af073d4ee6d963da99121807fceb74efd3 100644
--- a/chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc
+++ b/chrome/browser/renderer_host/render_process_host_chrome_browsertest.cc
@@ -510,7 +510,7 @@ IN_PROC_BROWSER_TEST_F(ChromeRenderProcessHostTest,
   // Kill the renderer process, simulating a crash. This should the ProcessDied
   // method to be called. Alternatively, RenderProcessHost::OnChannelError can
   // be called to directly force a call to ProcessDied.
-  base::KillProcess(wc1->GetRenderProcessHost()->GetHandle(), -1, true);
+  wc1->GetRenderProcessHost()->Shutdown(-1, true);
 
   observer.Wait();
 }