Enable size_t to int truncation warnings in PPAPI

ppapi/ppapi_cpp.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.
 
 # Shared source lists between trusted and untrusted targets are stored in
 # ppapi_sources.gypi.
 
 {
   'includes': [
     'ppapi_sources.gypi',
@@ skipping 18 matching lines @@
       'type': 'static_library',
       'dependencies': [
         'ppapi_c'
       ],
       'include_dirs+': [
         '..',
       ],
       'sources': [
         '<@(cpp_source_files)',
       ],
-      'conditions': [
-        ['OS=="win"', {
-          'msvs_settings': {
-            'VCCLCompilerTool': {
-              'AdditionalOptions': ['/we4244'],  # implicit conversion, possible loss of data
-            },
-          },
-          'msvs_disabled_warnings': [
-            4267,
-          ],
-        }],
-        ['OS=="linux"', {
-          'cflags': ['-Wextra', '-pedantic'],
-        }],
-        ['OS=="mac"', {
-          'xcode_settings': {
-            'WARNING_CFLAGS': ['-Wextra', '-pedantic'],
-           },
-        }],
-      ],
     },
     {
       # GN version: //ppapi:ppapi_cpp
       'target_name': 'ppapi_cpp',
       'type': 'static_library',
       'dependencies': [
         'ppapi_c',
         'ppapi_cpp_objects',
       ],
       'include_dirs+': [
         '..',
       ],
       'sources': [
         'cpp/module_embedder.h',
         'cpp/ppp_entrypoints.cc',
       ],
-      'conditions': [
-        ['OS=="linux"', {
-          'cflags': ['-Wextra', '-pedantic'],
-        }],
-        ['OS=="mac"', {
-          'xcode_settings': {
-            'WARNING_CFLAGS': ['-Wextra', '-pedantic'],
-           },
-        }]
-      ],
     },
     {
       # GN version: //ppapi:ppapi_internal_module
       'target_name': 'ppapi_internal_module',
       'type': 'static_library',
       'include_dirs+': [
         '..',
       ],
       'sources': [
         'cpp/private/internal_module.cc',
         'cpp/private/internal_module.h',
       ]
     },
   ],
 }