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

media/cdm/ppapi/external_clear_key/cdm_video_decoder.h

Index: media/cdm/ppapi/external_clear_key/cdm_video_decoder.h
diff --git a/media/cdm/ppapi/external_clear_key/cdm_video_decoder.h b/media/cdm/ppapi/external_clear_key/cdm_video_decoder.h
index 696a2903e40d98266d3055ca5dab2f9b14303d61..7ca88724aaca77686152fb7f34bf58a9011c36b7 100644
--- a/media/cdm/ppapi/external_clear_key/cdm_video_decoder.h
+++ b/media/cdm/ppapi/external_clear_key/cdm_video_decoder.h
@@ -7,7 +7,8 @@
 
 #include <stdint.h>
 
-#include "base/memory/scoped_ptr.h"
+#include <memory>
+
 #include "media/cdm/api/content_decryption_module.h"
 #include "media/cdm/ppapi/external_clear_key/clear_key_cdm_common.h"
 
@@ -37,8 +38,9 @@ class CdmVideoDecoder {
 // Initializes appropriate video decoder based on GYP flags and the value of
 // |config.codec|. Returns a scoped_ptr containing a non-null initialized
 // CdmVideoDecoder* upon success.
-scoped_ptr<CdmVideoDecoder> CreateVideoDecoder(
-    ClearKeyCdmHost* host, const cdm::VideoDecoderConfig& config);
+std::unique_ptr<CdmVideoDecoder> CreateVideoDecoder(
+    ClearKeyCdmHost* host,
+    const cdm::VideoDecoderConfig& config);
 
 }  // namespace media