Remove calls to deprecated MessageLoop methods on Windows and Linux.

media/gpu/rendering_helper.cc

Index: media/gpu/rendering_helper.cc
diff --git a/media/gpu/rendering_helper.cc b/media/gpu/rendering_helper.cc
index 79c5ecd9e324dcab6463d794b4e7c7c91ba0ed9c..1bca453ef0e27cd63eca57ed0630c9817192941c 100644
--- a/media/gpu/rendering_helper.cc
+++ b/media/gpu/rendering_helper.cc
@@ -18,6 +18,7 @@
 #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/strings/stringize_macros.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/time/time.h"
@@ -560,7 +561,7 @@ void RenderingHelper::CreateTexture(uint32_t texture_target,
                                     const gfx::Size& size,
                                     base::WaitableEvent* done) {
   if (base::MessageLoop::current() != message_loop_) {
-    message_loop_->PostTask(
+    message_loop_->task_runner()->PostTask(
         FROM_HERE,
         base::Bind(&RenderingHelper::CreateTexture, base::Unretained(this),
                    texture_target, texture_id, size, done));
@@ -635,7 +636,7 @@ void RenderingHelper::QueueVideoFrame(
   // Schedules the first RenderContent() if need.
   if (scheduled_render_time_.is_null()) {
     scheduled_render_time_ = base::TimeTicks::Now();
-    message_loop_->PostTask(FROM_HERE, render_task_.callback());
+    message_loop_->task_runner()->PostTask(FROM_HERE, render_task_.callback());
   }
 }
 
@@ -885,7 +886,7 @@ void RenderingHelper::ScheduleNextRenderContent() {
     DropOneFrameForAllVideos();
   }
 
-  message_loop_->PostDelayedTask(FROM_HERE, render_task_.callback(),
-                                 target - now);
+  message_loop_->task_runner()->PostDelayedTask(
+      FROM_HERE, render_task_.callback(), target - now);
 }
 }  // namespace media