Convert more test helpers to base::RunLoop, fix page title checks.

content/public/test/test_utils.h

Index: content/public/test/test_utils.h
diff --git a/content/public/test/test_utils.h b/content/public/test/test_utils.h
index 6e46fd239b1e15a0368c98839ed8c7a155789a2a..67a919c7811320bd820884d64f230ebf352b4e25 100644
--- a/content/public/test/test_utils.h
+++ b/content/public/test/test_utils.h
@@ -259,7 +259,7 @@ class InProcessUtilityThreadHelper : public BrowserChildProcessObserver {
       const ChildProcessData& data) override;
 
   int child_thread_count_;
-  scoped_refptr<MessageLoopRunner> runner_;
+  std::unique_ptr<base::RunLoop> run_loop_;
   std::unique_ptr<TestServiceManagerContext> shell_context_;
 
   DISALLOW_COPY_AND_ASSIGN(InProcessUtilityThreadHelper);
@@ -300,7 +300,7 @@ class WebContentsDestroyedWatcher : public WebContentsObserver {
   // Overridden WebContentsObserver methods.
   void WebContentsDestroyed() override;
 
-  scoped_refptr<MessageLoopRunner> message_loop_runner_;
+  base::RunLoop run_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsDestroyedWatcher);
 };