Fix downstream Android WebView build

build/java.gypi

 # 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.
 
 # This file is meant to be included into a target to provide a rule
 # to build Java in a consistent manner.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'my-package_java',
@@ skipping 227 matching lines @@
       ],
       'outputs': [
         '<(dex_path)',
       ],
       'action': [
         'python', '<(DEPTH)/build/android/dex.py',
         '--dex-path=<(dex_path)',
         '--android-sdk-root=<(android_sdk_root)',
 
         # TODO(newt): remove this once http://crbug.com/177552 is fixed in ninja.
-        '--ignore=>!(echo >(_inputs) | md5sum)',
+        '--ignore=>!(echo \'>(_inputs)\' | md5sum)',
 
         '<(jar_path)',
       ]
     },
 
   ],
 }