[Chromoting] Disable warning for unused strings in resources.

remoting/tools/verify_resources.py

Index: remoting/tools/verify_resources.py
diff --git a/remoting/tools/verify_resources.py b/remoting/tools/verify_resources.py
index 6677add5dbf4609d12031891832ad90983afb650..871c0faabc1e04bc8c2f37ff8013d4014e1d2eb3 100755
--- a/remoting/tools/verify_resources.py
+++ b/remoting/tools/verify_resources.py
@@ -128,6 +128,8 @@ def main():
                     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:
@@ -150,17 +152,18 @@ def main():
     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')