Cleanup: Remove trailing whitespaces in gyp files.

ppapi/ppapi_internal.gyp

 # Copyright (c) 2012 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,  # Use higher warning level.
   },
   'target_defaults': {
     'conditions': [
@@ skipping 225 matching lines @@
           'dependencies': [
             'ppapi.gyp:ppapi_c',
             '../base/base.gyp:base_win64',
             '../base/third_party/dynamic_annotations/dynamic_annotations.gyp:dynamic_annotations_win64',
             '../gpu/gpu.gyp:command_buffer_common_win64',
             '../ipc/ipc.gyp:ipc_win64',
             '../ui/events/latency_info_nacl.gyp:latency_info_nacl_win64',
           ],
           'defines': [
             '<@(nacl_win64_defines)',
-          ],              
+          ],
           'export_dependent_settings': [
             '../base/base.gyp:base_win64',
           ],
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
         },
         {
@@ skipping 11 matching lines @@
             '../gpu/gpu.gyp:gpu_ipc_win64',
             '../ui/events/latency_info_nacl.gyp:latency_info_nacl_win64',
             'ppapi.gyp:ppapi_c',
             'ppapi_shared_win64',
           ],
           'export_dependent_settings': [
             '../gpu/gpu.gyp:gpu_ipc_win64',
           ],
           'defines': [
             '<@(nacl_win64_defines)',
-          ],              
+          ],
           'all_dependent_settings': {
             'include_dirs': [
                '..',
             ],
           },
           'configurations': {
             'Common_Base': {
               'msvs_target_platform': 'x64',
             },
           },
       }],
     }],
   ],
 }