HeadlessWebContents:Observer to observe render process exit status

headless/test/headless_browser_test.h

Index: headless/test/headless_browser_test.h
diff --git a/headless/test/headless_browser_test.h b/headless/test/headless_browser_test.h
index c787859eb5b84c5f4a03f41809cef22bae8c37b5..3db973b02e5490ca3c4a7107a56b9a2a168ee461 100644
--- a/headless/test/headless_browser_test.h
+++ b/headless/test/headless_browser_test.h
@@ -105,6 +105,8 @@ class HeadlessAsyncDevTooledBrowserTest : public HeadlessBrowserTest,
 
   // HeadlessWebContentsObserver implementation:
   void DevToolsTargetReady() override;
+  void RenderProcessExited(base::TerminationStatus status,
+                           int exit_code) override;
 
   // Implemented by tests and used to send request(s) to DevTools. Subclasses
   // need to ensure that FinishAsynchronousTest() is called after response(s)
@@ -117,6 +119,7 @@ class HeadlessAsyncDevTooledBrowserTest : public HeadlessBrowserTest,
   HeadlessBrowserContext* browser_context_;  // Not owned.
   HeadlessWebContents* web_contents_;
   std::unique_ptr<HeadlessDevToolsClient> devtools_client_;
+  bool render_process_exited_;
 };
 
 }  // namespace headless