Convert //chromecast from scoped_ptr to std::unique_ptr

chromecast/media/cma/test/frame_generator_for_test.cc

Index: chromecast/media/cma/test/frame_generator_for_test.cc
diff --git a/chromecast/media/cma/test/frame_generator_for_test.cc b/chromecast/media/cma/test/frame_generator_for_test.cc
index 20a8d795036e5ecbf0537e90da1b80dd33bdcaca..a656444958b11a6eabf6ff78e3381cf33c7cfc6e 100644
--- a/chromecast/media/cma/test/frame_generator_for_test.cc
+++ b/chromecast/media/cma/test/frame_generator_for_test.cc
@@ -97,11 +97,9 @@ scoped_refptr<DecoderBufferBase> FrameGeneratorForTest::Generate() {
       0x0, 0x2, 0x1, 0x3, 0x5, 0x4, 0x7, 0x6,
       0x9, 0x8, 0xb, 0xa, 0xd, 0xc, 0xf, 0xe };
 
-    scoped_ptr< ::media::DecryptConfig> decrypt_config(
-        new ::media::DecryptConfig(
-            std::string(key_id, arraysize(key_id)),
-            std::string(iv, arraysize(iv)),
-            subsamples));
+    std::unique_ptr<::media::DecryptConfig> decrypt_config(
+        new ::media::DecryptConfig(std::string(key_id, arraysize(key_id)),
+                                   std::string(iv, arraysize(iv)), subsamples));
     buffer->set_decrypt_config(std::move(decrypt_config));
   }