[Chromoting] Disable warning for unused strings in resources.

remoting/tools/verify_resources.py

 #!/usr/bin/env python
 # Copyright (c) 2012 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.
 
 """Verifies that GRD resource files define all the strings used by a given
 set of source files. For file formats where it is not possible to infer which
 strings represent message identifiers, localized strings should be explicitly
 annotated with the string "i18n-content", for example:
 
@@ skipping 110 matching lines @@
   return result
 
 
 def main():
   parser = optparse.OptionParser(
       usage='Usage: %prog [options...] [source_file...]')
   parser.add_option('-t', '--touch', dest='touch',
                     help='File to touch when finished.')
   parser.add_option('-r', '--grd', dest='grd', action='append',
                     help='grd file')
+  parser.add_option('--strict', dest='strict', action='store_true',
+                    help='Use strict verification checks.')
 
   options, args = parser.parse_args()
   if not options.touch:
     print '-t is not specified.'
     return 1
   if len(options.grd) == 0 or len(args) == 0:
     print 'At least one GRD file needs to be specified.'
     return 1
 
   all_resources = []
   non_android_resources = []
   for f in options.grd:
     android_tags, other_tags = LoadTagsFromGrd(f)
     all_resources.extend(android_tags + other_tags)
     non_android_resources.extend(other_tags)
 
   used_tags = set([])
   exit_code = 0
   for f in args:
     if not VerifyFile(f, all_resources, used_tags):
       exit_code = 1
 
-  # Determining if a resource is being used in the Android app is tricky
-  # because it requires annotating and parsing Android XML layout files.
-  # For now, exclude Android strings from this check.
-  warnings = False
-  for tag in non_android_resources:
-    if tag not in used_tags:
-      print ('%s/%s:0: warning: %s is defined but not used') % \
-          (os.getcwd(), sys.argv[2], tag)
-      warnings = True
-  if warnings:
-    print WARNING_MESSAGE
+  if options.strict:
+    warnings = False
+    # Determining if a resource is being used in the Android app is tricky
+    # because it requires annotating and parsing Android XML layout files.
+    # For now, exclude Android strings from this check.
+    for tag in non_android_resources:
+      if tag not in used_tags:
+        print ('%s/%s:0: warning: %s is defined but not used') % \
+            (os.getcwd(), sys.argv[2], tag)
+        warnings = True
+    if warnings:
+      print WARNING_MESSAGE
 
   if exit_code == 0:
     f = open(options.touch, 'a')
     f.close()
     os.utime(options.touch, None)
 
   return exit_code
 
 
 if __name__ == '__main__':
   sys.exit(main())