Adding fixed guids to some modules to facilitate incremental switch to gyp.

testing/gtest.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': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/common.gypi',
   ],
   'targets': [
     {
       'target_name': 'gtest',
       'type': 'static_library',
+      'msvs_guid': 'C8F6C172-56F2-4E76-B5FA-C3B423B31BE7',
       'sources': [
         'gtest/include/gtest/internal/gtest-death-test-internal.h',
         'gtest/include/gtest/internal/gtest-filepath.h',
         'gtest/include/gtest/internal/gtest-internal.h',
         'gtest/include/gtest/internal/gtest-linked_ptr.h',
         'gtest/include/gtest/internal/gtest-param-util-generated.h',
         'gtest/include/gtest/internal/gtest-param-util.h',
         'gtest/include/gtest/internal/gtest-port.h',
         'gtest/include/gtest/internal/gtest-string.h',
         'gtest/include/gtest/internal/gtest-type-util.h',
@@ skipping 32 matching lines @@
           'gtest',
           'gtest/include',
         ],
         'target_conditions': [
           ['_type=="executable"', {'test': 1}],
         ],
       },
     },
   ],
 }