Remove all .gyp and .gypi files.

build/win/asan.gyp

-# Copyright (c) 2014 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.
-
-{
-   'targets': [
-     {
-       'target_name': 'asan_dynamic_runtime',
-       'type': 'none',
-       'variables': {
-         # Every target is going to depend on asan_dynamic_runtime, so allow
-         # this one to depend on itself.
-         'prune_self_dependency': 1,
-       },
-       'conditions': [
-         ['OS=="win"', {
-           'copies': [
-             {
-               'destination': '<(PRODUCT_DIR)',
-               'files': [
-                 # Path is relative to this GYP file.
-                 '<(DEPTH)/<(make_clang_dir)/lib/clang/3.7.0/lib/windows/clang_rt.asan_dynamic-i386.dll',
-               ],
-             },
-           ],
-         }],
-       ],
-     },
-   ],
-}