remove _p.c files to avoid link errors when incremental linking

third_party/iaccessible2/iaccessible2.gyp

 # Copyright (c) 2010 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/common.gypi',
   ],
 
   'target_defaults': {
     'include_dirs': [
       '.',
       '<(INTERMEDIATE_DIR)',
     ],
   },
   'targets': [
     {
       'target_name': 'iaccessible2',
       'type': 'static_library',
       'sources': [
         'ia2_api_all.idl',
         '<(INTERMEDIATE_DIR)/ia2_api_all.h',
         '<(INTERMEDIATE_DIR)/ia2_api_all_i.c',
-        '<(INTERMEDIATE_DIR)/ia2_api_all_p.c',
       ],
       'hard_dependency': 1,
       'direct_dependent_settings': {
         'include_dirs': [
           # Bit of a hack to work around the built in vstudio rule.
           '<(INTERMEDIATE_DIR)/../iaccessible2',
         ],
       },
     },
     {
       'target_name': 'IAccessible2Proxy',
       'type': 'shared_library',
       'defines': [ 'REGISTER_PROXY_DLL' ],
       'dependencies': [ 'iaccessible2' ],
       'sources': [
         'IAccessible2Proxy.def',
         '<(INTERMEDIATE_DIR)/../iaccessible2/dlldata.c',
       ],
       'link_settings': {
         'libraries': [
           '-lrpcrt4.lib',
         ],
       },
     },
   ],
 }