Remove MessageLoop::current() from rendering_helper.cc.

media/gpu/rendering_helper.h

Index: media/gpu/rendering_helper.h
diff --git a/media/gpu/rendering_helper.h b/media/gpu/rendering_helper.h
index 3b6c631bdd0f33f41757632739ac87a02ee43baa..dd9f721b8805a8bd397c359e59a25f90ee141d95 100644
--- a/media/gpu/rendering_helper.h
+++ b/media/gpu/rendering_helper.h
@@ -15,6 +15,8 @@
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
+#include "base/memory/ref_counted.h"
+#include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "ui/gfx/geometry/rect.h"
@@ -24,7 +26,6 @@
 #include "ui/gl/gl_surface.h"
 
 namespace base {
-class MessageLoop;
 class WaitableEvent;
 }
 
@@ -186,7 +187,7 @@ class RenderingHelper {
   // |texture_target|.
   void RenderTexture(uint32_t texture_target, uint32_t texture_id);
 
-  base::MessageLoop* message_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   scoped_refptr<gl::GLContext> gl_context_;
   scoped_refptr<gl::GLSurface> gl_surface_;