Motown: Remove ffmpeg_branding arg to fix fnl build.

mojo/tools/mopy/gn.py

 # Copyright 2015 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.
 
 """
 GN-related configuration functions, e.g., to produce a Config object from a GN
 args.gn file).
 """
 
 
@@ skipping 36 matching lines @@
   """
   Return the arguments for gn for the given configuration. This function returns
   a dictionary with boolean values as boolean.
   """
   gn_args = {}
 
   gn_args["is_debug"] = bool(config.is_debug)
   gn_args["is_official_build"] = bool(config.is_official_build)
   gn_args["is_asan"] = config.sanitizer == Config.SANITIZER_ASAN
 
-  if config.target_os != Config.OS_ANDROID:
-    gn_args["ffmpeg_branding"] = "ChromeOS"
-
   if config.is_clang is not None:
     gn_args["is_clang"] = bool(config.is_clang)
   else:
     gn_args["is_clang"] = config.target_os not in (Config.OS_ANDROID,
                                                    Config.OS_FNL,
                                                    Config.OS_WINDOWS)
 
   if config.values.get("use_goma"):
     gn_args["use_goma"] = True
     gn_args["goma_dir"] = config.values["goma_dir"]
@@ skipping 89 matching lines @@
   values = {}
   with open(gn_file, "r") as f:
     for line in f.readlines():
       line = re.sub("\s*#.*", "", line)
       result = re.match("^\s*(\w+)\s*=\s*(.*)\s*$", line)
       if result:
         key = result.group(1)
         value = result.group(2)
         values[key] = ast.literal_eval(TRANSLATIONS.get(value, value))
   return values