Apply gn format with 'sources' sorting to src/

tools/generate_library_loader/generate_library_loader.gni

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # This template makes a stub for a Linux system library that dynamically loads
 # it at runtime.
 
 # name: Name to use for the value of the --name arg.
 # output_h/output_cc: Names for the generated header/cc file with no dir.
 # header: header file to process. Example: "<foo/bar.h>"
@@ skipping 42 matching lines @@
       ]
     }
     args += invoker.functions
   }
 
   source_set(target_name) {
     if (defined(invoker.config)) {
       public_configs = [ invoker.config ]
     }
     sources = [
+      output_cc,
       output_h,
-      output_cc,
     ]
     deps = [
       ":${target_name}_loader",
     ]
   }
 }