Remove calls to deprecated MessageLoop methods in content.

content/browser/renderer_host/input/input_router_impl_unittest.cc

Index: content/browser/renderer_host/input/input_router_impl_unittest.cc
diff --git a/content/browser/renderer_host/input/input_router_impl_unittest.cc b/content/browser/renderer_host/input/input_router_impl_unittest.cc
index 105b02e6a79e5c9827aa929809e527c681d2b591..a8acf939e106bfd4c9547778b080af680efbaef0 100644
--- a/content/browser/renderer_host/input/input_router_impl_unittest.cc
+++ b/content/browser/renderer_host/input/input_router_impl_unittest.cc
@@ -339,7 +339,7 @@ class InputRouterImplTest : public testing::Test {
   static void RunTasksAndWait(base::TimeDelta delay) {
     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE, base::MessageLoop::QuitWhenIdleClosure(), delay);
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
   }
 
   InputRouterImpl::Config config_;