Apply gn format with 'sources' sorting to src/

build/secondary/third_party/sfntly/BUILD.gn

 # 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.
 
 static_library("sfntly") {
   sources = [
+    "cpp/src/sample/chromium/font_subsetter.cc",
+    "cpp/src/sample/chromium/font_subsetter.h",
+    "cpp/src/sample/chromium/subsetter_impl.cc",
+    "cpp/src/sample/chromium/subsetter_impl.h",
     "cpp/src/sfntly/data/byte_array.cc",
     "cpp/src/sfntly/data/byte_array.h",
     "cpp/src/sfntly/data/font_data.cc",
     "cpp/src/sfntly/data/font_data.h",
     "cpp/src/sfntly/data/font_input_stream.cc",
     "cpp/src/sfntly/data/font_input_stream.h",
     "cpp/src/sfntly/data/font_output_stream.cc",
     "cpp/src/sfntly/data/font_output_stream.h",
     "cpp/src/sfntly/data/growable_memory_byte_array.cc",
     "cpp/src/sfntly/data/growable_memory_byte_array.h",
@@ skipping 89 matching lines @@
     "cpp/src/sfntly/table/table.cc",
     "cpp/src/sfntly/table/table.h",
     "cpp/src/sfntly/table/table_based_table_builder.cc",
     "cpp/src/sfntly/table/table_based_table_builder.h",
     "cpp/src/sfntly/table/truetype/glyph_table.cc",
     "cpp/src/sfntly/table/truetype/glyph_table.h",
     "cpp/src/sfntly/table/truetype/loca_table.cc",
     "cpp/src/sfntly/table/truetype/loca_table.h",
     "cpp/src/sfntly/tag.cc",
     "cpp/src/sfntly/tag.h",
-    "cpp/src/sample/chromium/font_subsetter.cc",
-    "cpp/src/sample/chromium/font_subsetter.h",
-    "cpp/src/sample/chromium/subsetter_impl.cc",
-    "cpp/src/sample/chromium/subsetter_impl.h",
   ]
 
   defines = [ "SFNTLY_NO_EXCEPTION" ]
   include_dirs = [ "cpp/src" ]
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
 
   deps = [
     "//third_party/icu:icuuc",
   ]
 }