Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/utility/cast_content_utility_client.h

Index: chromecast/utility/cast_content_utility_client.h
diff --git a/chromecast/utility/cast_content_utility_client.h b/chromecast/utility/cast_content_utility_client.h
index bd5e0fd9cbc12d527180c836a93d6911d3471c0d..7f7528d85fe673a24853d379ea3c53ce4d3bae7e 100644
--- a/chromecast/utility/cast_content_utility_client.h
+++ b/chromecast/utility/cast_content_utility_client.h
@@ -5,8 +5,9 @@
 #ifndef CHROMECAST_UTILITY_CAST_CONTENT_UTILITY_CLIENT_H_
 #define CHROMECAST_UTILITY_CAST_CONTENT_UTILITY_CLIENT_H_
 
+#include <memory>
+
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "content/public/utility/content_utility_client.h"
 
 namespace chromecast {
@@ -14,7 +15,7 @@ namespace shell {
 
 class CastContentUtilityClient : public content::ContentUtilityClient {
  public:
-  static scoped_ptr<CastContentUtilityClient> Create();
+  static std::unique_ptr<CastContentUtilityClient> Create();
 
   CastContentUtilityClient() {}