Re-invent page aligning libraries in APK file.

build/android/finalize_apk_action.gypi

 # Copyright 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.
 
 # This file is meant to be included into an action to provide an action that
 # signs and zipaligns an APK.
 #
 # To use this, create a gyp action with the following form:
 #  {
 #    'action_name': 'some descriptive action name',
 #    'variables': {
 #      'input_apk_path': 'relative/path/to/input.apk',
 #      'output_apk_path': 'relative/path/to/output.apk',
 #    },
 #    'includes': [ '../../build/android/finalize_apk.gypi' ],
 #  },
 #
 
 {
   'message': 'Signing/aligning <(_target_name) APK: <(input_apk_path)',
   'variables': {
     'keystore_path%': '<(DEPTH)/build/android/ant/chromium-debug.keystore',
     'keystore_name%': 'chromiumdebugkey',
     'keystore_password%': 'chromium',
     'conditions': [
         # Webview doesn't use zipalign or rezip.
         ['android_webview_build==0', {
           'zipalign_path%': ['<!@(find <(android_sdk_root) -name zipalign)'],
           'rezip_path%': '<(PRODUCT_DIR)/rezip',
+          'prealign_path%': '<(PRODUCT_DIR)/lib.java/prealign.jar'
         }, {
           'zipalign_path%': "",
           'rezip_path%': "",
+          'prealign_path%': "",
         }],
     ],
   },
   'inputs': [
     '<(DEPTH)/build/android/gyp/util/build_utils.py',
     '<(DEPTH)/build/android/gyp/finalize_apk.py',
     '<(keystore_path)',
     '<(input_apk_path)',
   ],
   'outputs': [
     '<(output_apk_path)',
   ],
   'action': [
     'python', '<(DEPTH)/build/android/gyp/finalize_apk.py',
     '--zipalign-path=<(zipalign_path)',
     '--unsigned-apk-path=<(input_apk_path)',
     '--final-apk-path=<(output_apk_path)',
     '--key-path=<(keystore_path)',
     '--key-name=<(keystore_name)',
     '--key-passwd=<(keystore_password)',
     '--load-library-from-zip-file=<(load_library_from_zip_file)',
     '--rezip-path=<(rezip_path)',
+    '--prealign-path=<(prealign_path)',
   ],
 }