Run gn --format over all .gn files

BUILD.gn

 # Copyright (c) 2013 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 is the root build file for GN. GN will start processing by loading this
 # file, and recursively load all dependencies until all dependencies are either
 # resolved or known not to exist (which will cause the build to fail). So if
 # you add a new build file, there must be some path of dependencies from this
 # file to your new one or GN won't know about it.
 
@@ skipping 690 matching lines @@
   }
 
   if (is_mac) {
     deps -= [ "//mandoline:all" ]  # TODO(GYP)
   }
 
   if (use_libfuzzer) {
     # these are needed only for gn to discover build files.
     deps += [
       "//testing/libfuzzer:libfuzzer_main",
-      "//testing/libfuzzer/fuzzers:string_to_int_fuzzer"
+      "//testing/libfuzzer/fuzzers:string_to_int_fuzzer",
     ]
   }
 }
 
 group("gn_mojo_targets") {
   testonly = true
   if (is_linux && !is_chromeos) {
     # TODO(GYP): Figure out if any of these should be in gn_all
     # and figure out how cross-platform they are
     deps = [
@@ skipping 123 matching lines @@
       if (target_cpu == "x86") {
         deps += [
           # "//content/shell:crash_service_win64", TODO(GYP): crbug.com/537009
         ]
       }
     } else {
       deps += [ "//breakpad:minidump_stackwalk($host_toolchain)" ]
     }
   }
 }