Remove all .gyp and .gypi files.

build/win_precompile.gypi

Index: build/win_precompile.gypi
diff --git a/build/win_precompile.gypi b/build/win_precompile.gypi
deleted file mode 100644
index fb86076666eda4fbfa10a8066293737211bf39d1..0000000000000000000000000000000000000000
--- a/build/win_precompile.gypi
+++ /dev/null
@@ -1,20 +0,0 @@
-# Copyright (c) 2011 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.
-
-# Include this file to make targets in your .gyp use the default
-# precompiled header on Windows, in debug builds only as the official
-# builders blow up (out of memory) if precompiled headers are used for
-# release builds.
-
-{
-  'conditions': [
-    ['OS=="win" and chromium_win_pch==1', {
-        'target_defaults': {
-          'msvs_precompiled_header': '<(DEPTH)/build/precompile.h',
-          'msvs_precompiled_source': '<(DEPTH)/build/precompile.cc',
-          'sources': ['<(DEPTH)/build/precompile.cc'],
-        }
-      }],
-  ],
-}