Remove calls to deprecated MessageLoop methods in android_webview.

android_webview/browser/test/rendering_test.cc

Index: android_webview/browser/test/rendering_test.cc
diff --git a/android_webview/browser/test/rendering_test.cc b/android_webview/browser/test/rendering_test.cc
index d32b84b09b437e3919184e20672f2b2a82c5e330..5a941417099ec6e19eb10bf61ef8a7cfa12d0361 100644
--- a/android_webview/browser/test/rendering_test.cc
+++ b/android_webview/browser/test/rendering_test.cc
@@ -94,7 +94,7 @@ void RenderingTest::RunTest() {
 
   ui_task_runner_->PostTask(
       FROM_HERE, base::Bind(&RenderingTest::StartTest, base::Unretained(this)));
-  message_loop_->Run();
+  run_loop_.Run();
 }
 
 void RenderingTest::StartTest() {
@@ -102,14 +102,7 @@ void RenderingTest::StartTest() {
 }
 
 void RenderingTest::EndTest() {
-  ui_task_runner_->PostTask(
-      FROM_HERE,
-      base::Bind(&RenderingTest::QuitMessageLoop, base::Unretained(this)));
-}
-
-void RenderingTest::QuitMessageLoop() {
-  DCHECK_EQ(base::MessageLoop::current(), message_loop_.get());
-  message_loop_->QuitWhenIdle();
+  ui_task_runner_->PostTask(FROM_HERE, run_loop_.QuitWhenIdleClosure());
 }
 
 content::SynchronousCompositor* RenderingTest::ActiveCompositor() const {