Apply gn format with 'sources' sorting to src/

chrome/renderer/BUILD.gn

Index: chrome/renderer/BUILD.gn
diff --git a/chrome/renderer/BUILD.gn b/chrome/renderer/BUILD.gn
index 20829ddeb407bd6f007fab40a000e80bec88d8cd..35637e095287969c20d299a1eb9c5fe72579d666 100644
--- a/chrome/renderer/BUILD.gn
+++ b/chrome/renderer/BUILD.gn
@@ -122,10 +122,10 @@ static_library("renderer") {
     ]
     if (!enable_webrtc) {
       sources -= [
-        "media/cast_rtp_stream.cc",
-        "media/cast_rtp_stream.h",
         "media/cast_receiver_session.cc",
         "media/cast_receiver_session.h",
+        "media/cast_rtp_stream.cc",
+        "media/cast_rtp_stream.h",
       ]
     }
   }