Update some gyp targets to use dex_action.gypi

build/java_prebuilt.gypi

Index: build/java_prebuilt.gypi
diff --git a/build/java_prebuilt.gypi b/build/java_prebuilt.gypi
index 770239d2e0070ced85e271ee5f1b0dc8e53bb132..5a867758a454e7162c6e7c51ec75a6cadb7f7a61 100644
--- a/build/java_prebuilt.gypi
+++ b/build/java_prebuilt.gypi
@@ -81,21 +81,13 @@
     {
       'action_name': 'dex_<(_target_name)',
       'message': 'Dexing <(_target_name) jar',
-      'inputs': [
-        '<(DEPTH)/build/android/gyp/util/build_utils.py',
-        '<(DEPTH)/build/android/gyp/dex.py',
-        '<(dex_input_jar_path)',
-      ],
-      'outputs': [
-        '<(dex_path)',
-      ],
-      'action': [
-        'python', '<(DEPTH)/build/android/gyp/dex.py',
-        '--dex-path=<(dex_path)',
-        '--android-sdk-tools=<(android_sdk_tools)',
-        '<(dex_input_jar_path)',
-      ]
+      'variables': {
+        'dex_input_paths': [
+          '<(dex_input_jar_path)',
+        ],
+        'output_path': '<(dex_path)',
+      },
+      'includes': [ 'android/dex_action.gypi' ],
     },
-
   ],
 }