Remove all .gyp and .gypi files.

build/android/create_standalone_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
-# combines a directory of shared libraries and an incomplete APK into a
-# standalone APK.
-#
-# To use this, create a gyp action with the following form:
-#  {
-#    'action_name': 'some descriptive action name',
-#    'variables': {
-#      'inputs': [ 'input_path1', 'input_path2' ],
-#      'input_apk_path': '<(unsigned_apk_path)',
-#      'output_apk_path': '<(unsigned_standalone_apk_path)',
-#      'libraries_top_dir': '<(libraries_top_dir)',
-#    },
-#    'includes': [ 'relative/path/to/create_standalone_apk_action.gypi' ],
-#  },
-
-{
-  'message': 'Creating standalone APK: <(output_apk_path)',
-  'variables': {
-    'inputs': [],
-  },
-  'inputs': [
-    '<(DEPTH)/build/android/gyp/util/build_utils.py',
-    '<(DEPTH)/build/android/gyp/create_standalone_apk.py',
-    '<(input_apk_path)',
-    '>@(inputs)',
-  ],
-  'outputs': [
-    '<(output_apk_path)',
-  ],
-  'action': [
-    'python', '<(DEPTH)/build/android/gyp/create_standalone_apk.py',
-    '--libraries-top-dir=<(libraries_top_dir)',
-    '--input-apk-path=<(input_apk_path)',
-    '--output-apk-path=<(output_apk_path)',
-  ],
-}