Add ChromeCodingConvention.java to Closure Compiler to preserve getInstance() type

third_party/closure_compiler/runner/build_runner_jar.py

 #!/usr/bin/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.
 
 import os
 import shutil
 import subprocess
 import sys
 import tempfile
 
 
 def rel_to_abs(rel_path):
   script_path = os.path.dirname(os.path.abspath(__file__))
   return os.path.join(script_path, rel_path)
 
 
 java_bin_path = os.getenv('JAVA_HOME', '')
 if java_bin_path:
   java_bin_path = os.path.join(java_bin_path, 'bin')
 
 main_class = 'org.chromium.closure.compiler.Runner'
 jar_name = 'runner.jar'
 src_dir = 'src'
 closure_jar_relpath = os.path.join('..', 'compiler', 'compiler.jar')
 src_path = rel_to_abs(src_dir)
 
 
 def run_and_communicate(command, error_template):
+  print >> sys.stderr, command
   proc = subprocess.Popen(command, stdout=subprocess.PIPE, shell=True)
   proc.communicate()
   if proc.returncode:
     print >> sys.stderr, error_template % proc.returncode
     sys.exit(proc.returncode)
 
 
 def build_artifacts():
   print 'Compiling...'
   java_files = []
@@ skipping 33 matching lines @@
 
 def main():
   if len(sys.argv) > 1:
     show_usage_and_die()
 
   build_artifacts()
 
 
 if __name__ == '__main__':
   main()