[Android] Auto-generate API 14 resources from the existing API 17 resources.

build/android/gyp/process_resources.py

Index: build/android/gyp/process_resources.py
diff --git a/build/android/gyp/process_resources.py b/build/android/gyp/process_resources.py
index 40f1017ce5cf92df9a7d8164812d17b5556e4230..6e9e84c37c7cc1d1bf257a70d2a5f3a6ffe5318b 100755
--- a/build/android/gyp/process_resources.py
+++ b/build/android/gyp/process_resources.py
@@ -29,6 +29,10 @@ def ParseArgs():
                     help='directory containing images to be crunched')
   parser.add_option('--crunch-output-dir',
                     help='directory to hold crunched resources')
+  parser.add_option('--res-mirror-input-dir',
+                    help='directory containing LTR resources to be mirrored')
+  parser.add_option('--res-mirror-output-dir',
+                    help='directory to hold mirrored, RTL resources')
   parser.add_option('--non-constant-id', action='store_true')
   parser.add_option('--custom-package', help='Java package for R.java')
   parser.add_option('--android-manifest', help='AndroidManifest.xml path')
@@ -44,7 +48,8 @@ def ParseArgs():
 
   # Check that required options have been provided.
   required_options = ('android_sdk', 'android_sdk_tools', 'R_dir', 'res_dirs',
-                      'crunch_input_dir', 'crunch_output_dir')
+                      'crunch_input_dir', 'crunch_output_dir',
+                      'res_mirror_input_dir', 'res_mirror_output_dir')
   build_utils.CheckOptions(options, parser, required=required_options)
 
   return options
@@ -89,6 +94,14 @@ def main():
               '-C', options.crunch_output_dir]
   build_utils.CheckCallDie(aapt_cmd, suppress_output=True)
 
+  # Generate RTL versions of layouts and other XML resources.
+  build_utils.MakeDirectory(options.res_mirror_output_dir)
+  mirror_cmd = ['mirror_resources.py',
+                '--res-dir', options.res_mirror_input_dir,
+                '--res-mirrored-dir', options.res_mirror_output_dir]
+  build_utils.CheckCallDie(mirror_cmd, suppress_output=True)
+
+
   if options.stamp:
     build_utils.Touch(options.stamp)