Finish plumbing MojoVideoDecoder.

media/mojo/services/mojo_media_client.cc

Index: media/mojo/services/mojo_media_client.cc
diff --git a/media/mojo/services/mojo_media_client.cc b/media/mojo/services/mojo_media_client.cc
index 56d16b09fbebb8370dd7eb1c9599618e3568a284..8ab4198aed8d1c0e375d96860d33fa2f579dc082 100644
--- a/media/mojo/services/mojo_media_client.cc
+++ b/media/mojo/services/mojo_media_client.cc
@@ -4,6 +4,12 @@
 
 #include "media/mojo/services/mojo_media_client.h"
 
+#include "base/single_thread_task_runner.h"
+#include "media/base/audio_decoder.h"
+#include "media/base/cdm_factory.h"
+#include "media/base/renderer_factory.h"
+#include "media/base/video_decoder.h"
+
 namespace media {
 
 MojoMediaClient::MojoMediaClient() {}
@@ -19,6 +25,11 @@ std::unique_ptr<AudioDecoder> MojoMediaClient::CreateAudioDecoder(
   return nullptr;
 }
 
+std::unique_ptr<VideoDecoder> MojoMediaClient::CreateVideoDecoder(
+    scoped_refptr<base::SingleThreadTaskRunner> task_runner) {
+  return nullptr;
+}
+
 std::unique_ptr<RendererFactory> MojoMediaClient::CreateRendererFactory(
     const scoped_refptr<MediaLog>& media_log) {
   return nullptr;