Remove msvs_guids from ipc, media, net, ppapi, printing, sandbox,

ppapi/ppapi_tests.gypi

 # 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.
 
 {
   'targets': [
      {
       'target_name': 'ppapi_example',
       'dependencies': [
         'ppapi.gyp:ppapi_cpp'
       ],
       'xcode_settings': {
         'INFOPLIST_FILE': 'example/Info.plist',
       },
       'sources': [
         'example/example.cc',
       ],
       'conditions': [
         ['OS=="win"', {
           'type': 'shared_library',
-          'msvs_guid': 'EE00E36E-9E8C-4DFB-925E-FBE32CEDB91B',
           'sources': [
             'example/example.rc',
           ],
           'run_as': {
             'action': [
               '<(PRODUCT_DIR)/<(EXECUTABLE_PREFIX)chrome<(EXECUTABLE_SUFFIX)',
               '--register-pepper-plugins=$(TargetPath);application/x-ppapi-example',
               'file://$(ProjectDir)/example/example.html',
             ],
           },
@@ skipping 252 matching lines @@
 #          ],
 #        },
 #      ],
     },
     {
       'target_name': 'ppapi_unittests',
       'type': 'executable',
       'variables': {
         'chromium_code': 1,
       },
-      'msvs_guid': 'C2BD9365-5BD7-44A7-854E-A49E606BE8E4',
       'dependencies': [
         'ppapi_proxy',
         '../base/base.gyp:test_support_base',
         '../ipc/ipc.gyp:test_support_ipc',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../ui/gfx/surface/surface.gyp:surface',
       ],
       'sources': [
         'proxy/run_all_unittests.cc',
 
         'proxy/host_dispatcher_unittest.cc',
         'proxy/mock_resource.cc',
         'proxy/mock_resource.h',
         'proxy/plugin_dispatcher_unittest.cc',
         'proxy/plugin_resource_tracker_unittest.cc',
         'proxy/plugin_var_tracker_unittest.cc',
         'proxy/ppapi_proxy_test.cc',
         'proxy/ppapi_proxy_test.h',
         'proxy/serialized_var_unittest.cc',
       ],
     },
   ],
 }