Adds the OCHamcrest library to the iOS build.

ios/chrome/tools/build/ios_generate_forwarding_headers.py

Index: ios/chrome/tools/build/ios_generate_forwarding_headers.py
diff --git a/ios/chrome/tools/build/ios_generate_forwarding_headers.py b/ios/chrome/tools/build/ios_generate_forwarding_headers.py
new file mode 100755
index 0000000000000000000000000000000000000000..88f5683b91a61b989e26fee1c391d6f3e807cb75
--- /dev/null
+++ b/ios/chrome/tools/build/ios_generate_forwarding_headers.py
@@ -0,0 +1,71 @@
+#!/usr/bin/env python

[sdefresne, 2016/02/22 16:36:48]

Rename to copy_files.py

+# Copyright 2016 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 argparse
+import datetime

[sdefresne, 2016/02/22 16:36:48]

Remove.

+import os
+import sys

[sdefresne, 2016/02/22 16:36:48]

import shutil

+
+COPYRIGHT = """// Copyright {0} The Chromium Authors. All rights reserved.

[sdefresne, 2016/02/22 16:36:48]

Remove.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.\n
+""".format(datetime.date.today().year)
+
+def filter_header_files(inputs):

[sdefresne, 2016/02/22 16:36:48]

Remove.

+  return [filename for filename in inputs if filename.endswith('.h')]
+
+def get_output_filename(input_filename, dest_dir):
+  return os.path.join(dest_dir, os.path.basename(input_filename))
+
+def list_inputs(possible_inputs):

[sdefresne, 2016/02/22 16:36:48]

Remove.

+  return ' '.join(filter_header_files(possible_inputs))
+
+def list_outputs(possible_inputs, dest_dir):

[sdefresne, 2016/02/22 16:36:48]

s/possible_inputs/inputs/

+  outputs = []

[sdefresne, 2016/02/22 16:36:48]

outputs = [ get_output_filename(filename, dest_dir) for filename in inputs ]

+  for filename in filter_header_files(possible_inputs):
+    outputs.append(get_output_filename(filename, dest_dir))
+  return ' '.join(outputs)
+
+def generate_headers(possible_inputs, dest_dir):

[sdefresne, 2016/02/22 16:36:48]

Remove and replace with:

def copy_files(inputs, dest_dir):
  for filename in inputs:
    shutil.copy(filename, dest_dir)

+  for filename in filter_header_files(possible_inputs):
+    content = COPYRIGHT + '#import "{0}"\n'.format(filename)
+    forwarding_header = get_output_filename(filename, dest_dir)
+    if os.path.isfile(forwarding_header):
+      with open(forwarding_header, 'r') as header:
+        old_content = header.read()
+        if old_content == content:
+          continue
+    with open(forwarding_header, 'w') as header:
+      header.write(content)
+
+def DoMain(argv):
+  parser = argparse.ArgumentParser(description='Generate forwarding headers.')
+  parser.add_argument('-i', '--list-inputs', action='store_true',

[sdefresne, 2016/02/22 16:36:48]

Remove '-i' argument.

+                      help='List input files and exit.')
+  parser.add_argument('-o', '--list-outputs', action='store_true',
+                      help='List output files and exit.')
+  parser.add_argument('-d', '--dest-dir', type=str,
+                      help=('Output directory for forwarding headers.'))
+  parser.add_argument('filenames', metavar='filename', type=str, nargs='+',
+                      help='Input filenames.')
+
+  args = parser.parse_args(argv)
+  if args.list_inputs:

[sdefresne, 2016/02/22 16:36:48]

Remove.

+    return list_inputs(args.filenames)
+
+  if not args.dest_dir:
+    print '--dest-dir is required for this command.'
+    sys.exit(1)
+  if args.list_outputs:
+    return list_outputs(args.filenames, args.dest_dir)
+
+  if not os.path.isdir(args.dest_dir):
+    os.makedirs(args.dest_dir)
+  generate_headers(args.filenames, args.dest_dir)

[sdefresne, 2016/02/22 16:36:48]

copy_files(args.filenames, args.dest_dir)

+  return
+
+if __name__ == '__main__':
+  results = DoMain(sys.argv[1:])
+  print results