Remove calls to deprecated MessageLoop methods in ui.

ui/gfx/animation/animation_container_unittest.cc

Index: ui/gfx/animation/animation_container_unittest.cc
diff --git a/ui/gfx/animation/animation_container_unittest.cc b/ui/gfx/animation/animation_container_unittest.cc
index b1bb7911e6a5a751d6e09aa191d1fe6ee4cf0d8a..ae29d8ad2cfba080f1cd52d33cb23b6ac86ee7d7 100644
--- a/ui/gfx/animation/animation_container_unittest.cc
+++ b/ui/gfx/animation/animation_container_unittest.cc
@@ -7,6 +7,7 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "base/run_loop.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/gfx/animation/animation_container_observer.h"
 #include "ui/gfx/animation/linear_animation.h"
@@ -95,7 +96,7 @@ TEST_F(AnimationContainerTest, Multi) {
   EXPECT_TRUE(container->is_running());
 
   // Run the message loop the delegate quits the message loop when notified.
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 
   // Both timers should have finished.
   EXPECT_TRUE(delegate1.finished());
@@ -120,7 +121,7 @@ TEST_F(AnimationContainerTest, Observer) {
   EXPECT_TRUE(container->is_running());
 
   // Run the message loop. The delegate quits the message loop when notified.
-  base::MessageLoop::current()->Run();
+  base::RunLoop().Run();
 
   EXPECT_EQ(1, observer.progressed_count());