Remove calls to deprecated MessageLoop methods in chrome.

chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc

Index: chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc
diff --git a/chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc b/chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc
index d7972a649d79736d92b136aa5013aa76550dd1e0..fd11ac76447aad67d3adb576ab1ec6cd56da9e0e 100644
--- a/chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc
+++ b/chrome/browser/media/webrtc/desktop_media_list_ash_unittest.cc
@@ -8,6 +8,7 @@
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
+#include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
@@ -64,7 +65,7 @@ TEST_F(DesktopMediaListAshTest, Screen) {
       .WillOnce(QuitMessageLoop())
       .WillRepeatedly(DoDefault());
   list_->StartUpdating(&observer_);
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 }
 
 TEST_F(DesktopMediaListAshTest, OneWindow) {
@@ -83,9 +84,9 @@ TEST_F(DesktopMediaListAshTest, OneWindow) {
       .WillOnce(QuitMessageLoop());
 
   list_->StartUpdating(&observer_);
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
   window.reset();
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 }
 
 TEST_F(DesktopMediaListAshTest, ScreenOnly) {
@@ -99,7 +100,7 @@ TEST_F(DesktopMediaListAshTest, ScreenOnly) {
       .WillRepeatedly(DoDefault());
 
   list_->StartUpdating(&observer_);
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 }
 
 // Times out on Win DrMemory bot. http://crbug.com/493187
@@ -122,7 +123,7 @@ TEST_F(DesktopMediaListAshTest, MAYBE_WindowOnly) {
       .WillOnce(QuitMessageLoop());
 
   list_->StartUpdating(&observer_);
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
   window.reset();
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 }