Replace scoped_ptr with std::unique_ptr in //media/base.

media/base/android/media_decoder_job.h

Index: media/base/android/media_decoder_job.h
diff --git a/media/base/android/media_decoder_job.h b/media/base/android/media_decoder_job.h
index b0136aa8191d6f1284514f18f5100d281044ddcc..01fc7c489a3e97fb4ded186da251aec2193214e3 100644
--- a/media/base/android/media_decoder_job.h
+++ b/media/base/android/media_decoder_job.h
@@ -6,6 +6,7 @@
 #define MEDIA_BASE_ANDROID_MEDIA_DECODER_JOB_H_
 
 #include <stddef.h>
+#include <memory>
 
 #include "base/callback.h"
 #include "base/macros.h"
@@ -161,7 +162,7 @@ class MediaDecoderJob {
 
   bool need_to_reconfig_decoder_job_;
 
-  scoped_ptr<MediaCodecBridge> media_codec_bridge_;
+  std::unique_ptr<MediaCodecBridge> media_codec_bridge_;
 
  private:
   friend class MediaSourcePlayerTest;