Android: Split up build.gradle.jinja

build/android/gyp/jinja_template.py

 #!/usr/bin/env python
 #
 # 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.
 
 """Renders one or more template files using the Jinja template engine."""
 
 import codecs
 import argparse
@@ skipping 19 matching lines @@
     contents, filename, uptodate = jinja2.FileSystemLoader.get_source(
         self, environment, template)
     self.loaded_templates.add(os.path.relpath(filename))
     return contents, filename, uptodate
 
 
 class JinjaProcessor(object):
   """Allows easy rendering of jinja templates with input file tracking."""
   def __init__(self, loader_base_dir, variables=None):
     self.loader_base_dir = loader_base_dir
-    self.variables = variables
+    self.variables = variables or {}
     self.loader = _RecordingFileSystemLoader(loader_base_dir)
     self.env = jinja2.Environment(loader=self.loader)
     self.env.undefined = jinja2.StrictUndefined
     self.env.line_comment_prefix = '##'
     self.env.trim_blocks = True
     self.env.lstrip_blocks = True
     self._template_cache = {}  # Map of path -> Template
 
   def Render(self, input_filename, variables=None):
     input_rel_path = os.path.relpath(input_filename, self.loader_base_dir)
@@ skipping 81 matching lines @@
                   options.outputs_zip)
 
   if options.depfile:
     output = options.output or options.outputs_zip
     deps = processor.GetLoadedTemplates()
     build_utils.WriteDepfile(options.depfile, output, deps)
 
 
 if __name__ == '__main__':
   main()