Apply gn format with 'sources' sorting to src/

third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn

Index: third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn
diff --git a/third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn b/third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn
index 9660a07b5aa46575a845ade82d123711db741cda..96c1d11065dc9fd4897a94b91cbc1b2ce910a400 100644
--- a/third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn
+++ b/third_party/mojo/src/mojo/public/cpp/utility/BUILD.gn
@@ -6,16 +6,16 @@ import("../../mojo_sdk.gni")
 
 mojo_sdk_source_set("utility") {
   sources = [
-    "mutex.h",
-    "run_loop.h",
-    "run_loop_handler.h",
-    "thread.h",
     "lib/mutex.cc",
     "lib/run_loop.cc",
     "lib/thread.cc",
     "lib/thread_local.h",
     "lib/thread_local_posix.cc",
     "lib/thread_local_win.cc",
+    "mutex.h",
+    "run_loop.h",
+    "run_loop_handler.h",
+    "thread.h",
   ]
 
   mojo_sdk_deps = [
@@ -26,10 +26,10 @@ mojo_sdk_source_set("utility") {
   if (is_win) {
     # See crbug.com/342893:
     sources -= [
-      "mutex.h",
-      "thread.h",
       "lib/mutex.cc",
       "lib/thread.cc",
+      "mutex.h",
+      "thread.h",
     ]
   }
 }