Mojo: get .so from PRODUCT_DIR for packaged apps

mojo/build/package_app.gypi

 # Copyright (c) 2013 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.
 
 {
   'type': 'none',
   'dependencies': [
     '<(app_name)',
   ],
   'conditions': [
     ['OS=="android"', {
       'variables': {
         'mojo_app_dir': '<(PRODUCT_DIR)/apps',
-        'source_binary': '<(SHARED_LIB_DIR)/<(SHARED_LIB_PREFIX)<(app_name)<(SHARED_LIB_SUFFIX)',
+        'source_binary': '<(PRODUCT_DIR)/<(SHARED_LIB_PREFIX)<(app_name)<(SHARED_LIB_SUFFIX)',
         'target_binary': '<(mojo_app_dir)/<(SHARED_LIB_PREFIX)<(app_name)<(SHARED_LIB_SUFFIX)',
       },
       'actions': [{
         'action_name': 'strip',
         'inputs': [ '<(source_binary)', ],
         'outputs': [ '<(target_binary)', ],
         'action': [
           '<(android_strip)',
           '<@(_inputs)',
           '--strip-unneeded',
           '-o',
           '<@(_outputs)',
         ],
       }],
     }],
   ],
 }