Clean up repack.py and repack_locale.py usage.

android_webview/android_webview.gyp

Index: android_webview/android_webview.gyp
diff --git a/android_webview/android_webview.gyp b/android_webview/android_webview.gyp
index e2c1eab0484699691b2792baa50ff3e40a10c577..ef872cc3edf31ec667b8c03d3c47a48fd784540b 100644
--- a/android_webview/android_webview.gyp
+++ b/android_webview/android_webview.gyp
@@ -51,9 +51,6 @@
         '<(DEPTH)/ui/resources/ui_resources.gyp:ui_resources',
         '<(DEPTH)/webkit/webkit_resources.gyp:webkit_resources',
       ],
-      'variables': {
-        'repack_path': '<(DEPTH)/tools/grit/grit/format/repack.py',
-      },
       'actions': [
         {
           'action_name': 'repack_android_webview_pack',
@@ -65,16 +62,9 @@
               '<(SHARED_INTERMEDIATE_DIR)/webkit/blink_resources.pak',
               '<(SHARED_INTERMEDIATE_DIR)/webkit/webkit_resources_100_percent.pak',
             ],
+            'pak_output': '<(PRODUCT_DIR)/android_webview_apk/assets/webviewchromium.pak',
           },
-          'inputs': [
-            '<(repack_path)',
-            '<@(pak_inputs)',
-          ],
-          'outputs': [
-            '<(PRODUCT_DIR)/android_webview_apk/assets/webviewchromium.pak',
-          ],
-          'action': ['python', '<(repack_path)', '<@(_outputs)',
-                     '<@(pak_inputs)'],
+         'includes': [ '../build/repack_action.gypi' ],
         }
       ],
     },