Use precompiled headers for most large projects.

third_party/cld/cld.gyp

 # Copyright (c) 2009 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.
 
 {
+  'includes': [
+    '../../build/win_precompile.gypi',
+  ],
   'targets': [
     {
       'target_name': 'cld',
       'type': 'static_library',
       'dependencies': [
         '../icu/icu.gyp:icuuc',
       ],
       'include_dirs': [
         '.',
       ],
@@ skipping 93 matching lines @@
                 'defines': [
                   'COMPILER_GCC',
                 ],
               },
             },
         ],
       ],
     },
   ],
 }