[chromedriver] Fix mobile device embedding script

chrome/test/chromedriver/cpp_source.py

 # Copyright 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.
 
 """Writes C++ header/cc source files for embedding resources into C++."""
 
 import datetime
 import os
+import sys
 
 
 def WriteSource(base_name,
                 dir_from_src,
                 output_dir,
                 global_string_map):
   """Writes C++ header/cc source files for the given map of string variables.
 
   Args:
       base_name: The basename of the file, without the extension.
       dir_from_src: Path from src to the directory that will contain the file,
           using forward slashes.
       output_dir: Directory to output the sources to.
       global_string_map: Map of variable names to their string values. These
           variables will be available as globals.
   """
   copyright = '\n'.join([
       '// Copyright %s 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.']) % datetime.date.today().year
+      '// found in the LICENSE file.',
+      '',
+      '// This file was generated at (%s) by running:',
+      '//     %s']) % (
+      datetime.date.today().year,
+      datetime.datetime.now().isoformat(' '),
+      ' '.join(sys.argv))
 
   # Write header file.
   externs = []
   for name in global_string_map.iterkeys():
     externs += ['extern const char %s[];' % name]
 
   temp = '_'.join(dir_from_src.split('/') + [base_name])
   define = temp.upper() + '_H_'
   header = '\n'.join([
       copyright,
@@ skipping 26 matching lines @@
   cc = '\n'.join([
       copyright,
       '',
       '#include "%s"' % (dir_from_src + '/' + base_name + '.h'),
       '',
       '\n'.join(definitions)])
   cc += '\n'
 
   with open(os.path.join(output_dir, base_name + '.cc'), 'w') as f:
     f.write(cc)