Cleanup: Remove trailing whitespaces in gyp files.

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 
+# Shared source lists between trusted and untrusted targets are stored in
 # ppapi_sources.gypi.
 
 {
   'includes': [
     'ppapi_sources.gypi',
   ],
   'targets': [
     {
       # GN version: //ppapi:ppapi_c
       'target_name': 'ppapi_c',
@@ skipping 22 matching lines @@
       ],
       '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'],
            },
         }],
       ],
@@ skipping 31 matching lines @@
       'include_dirs+': [
         '..',
       ],
       'sources': [
         'cpp/private/internal_module.cc',
         'cpp/private/internal_module.h',
       ]
     },
   ],
 }