Remove remaining calls to deprecated MessageLoop methods on Mac.

media/cast/sender/h264_vt_encoder_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdint.h>
 
 #include <queue>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 302 matching lines @@
   VideoEncoder::FrameEncodedCallback cb =
       base::Bind(&EndToEndFrameChecker::EncodeDone, checker.get());
   for (FrameId frame_id = FrameId::first(); frame_id < FrameId::first() + 6;
        ++frame_id) {
     checker->PushExpectation(frame_);
     EXPECT_TRUE(encoder_->EncodeVideoFrame(frame_, clock_->NowTicks(), cb));
     AdvanceClockAndVideoFrameTimestamp();
   }
 
   encoder_.reset();
-  message_loop_.RunUntilIdle();
+  base::RunLoop().RunUntilIdle();
 
   EXPECT_EQ(5, checker->count_frames_checked());
 }
 #endif
 
 TEST_F(H264VideoToolboxEncoderTest, CheckVideoFrameFactory) {
   auto video_frame_factory = encoder_->CreateVideoFrameFactory();
   ASSERT_TRUE(video_frame_factory.get());
   // The first call to |MaybeCreateFrame| will return null but post a task to
   // the encoder to initialize for the specified frame size. We then drain the
@@ skipping 71 matching lines @@
       gfx::Size(kVideoWidth, kVideoHeight), base::TimeDelta()));
 
   // After a power resume event, the factory should produce frames right away
   // because the encoder re-initializes on its own.
   power_source_->GenerateResumeEvent();
   CreateFrameAndMemsetPlane(video_frame_factory.get());
 }
 
 }  // namespace cast
 }  // namespace media