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

content/test/content_browser_test_utils_internal.h

Index: content/test/content_browser_test_utils_internal.h
diff --git a/content/test/content_browser_test_utils_internal.h b/content/test/content_browser_test_utils_internal.h
index 52227f73c446f26d55f6ced141a10ee0ec41b1f9..1ff94ab0e03053e2b9eb27a84f7eade9527a87c8 100644
--- a/content/test/content_browser_test_utils_internal.h
+++ b/content/test/content_browser_test_utils_internal.h
@@ -16,7 +16,6 @@
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
-#include "base/run_loop.h"
 #include "cc/surfaces/surface_id.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 #include "content/public/browser/web_contents_delegate.h"
@@ -31,6 +30,7 @@
 namespace content {
 
 class FrameTreeNode;
+class MessageLoopRunner;
 class RenderFrameHost;
 class RenderWidgetHostViewChildFrame;
 class Shell;
@@ -198,8 +198,8 @@
   // The URL this observer is expecting to be committed.
   GURL url_;
 
-  // The RunLoop used to spin the message loop.
-  base::RunLoop run_loop_;
+  // The MessageLoopRunner used to spin the message loop.
+  scoped_refptr<MessageLoopRunner> message_loop_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(UrlCommitObserver);
 };