Remove msvs_guids from third_party, webkit, tools and views.

third_party/zlib/zlib.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.
 
 {
   'variables': {
     'conditions': [
       [ 'os_posix == 1 and OS != "mac" and OS != "openbsd"', {
         # Link to system .so since we already use it due to GTK.
         # TODO(pvalchev): OpenBSD is purposefully left out, as the system
         # zlib brings up an incompatibility that breaks rendering.
         'use_system_zlib%': 1,
       }, {  # os_posix != 1 or OS == "mac" or OS == "openbsd"
         'use_system_zlib%': 0,
       }],
     ],
   },
   'conditions': [
     ['use_system_zlib==0', {
       'targets': [
         {
           'target_name': 'zlib',
           'type': 'static_library',
-          'msvs_guid': '8423AF0D-4B88-4EBF-94E1-E4D00D00E21C',
           'sources': [
             'contrib/minizip/ioapi.c',
             'contrib/minizip/ioapi.h',
             'contrib/minizip/iowin32.c',
             'contrib/minizip/iowin32.h',
             'contrib/minizip/unzip.c',
             'contrib/minizip/unzip.h',
             'contrib/minizip/zip.c',
             'contrib/minizip/zip.h',
             'adler32.c',
@@ skipping 70 matching lines @@
       ],
     }],
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: