win clang: don't disable -Wself-assign

third_party/libpng/libpng.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.
 
 {
   'targets': [
     {
       'target_name': 'libpng',
       'dependencies': [
         '../zlib/zlib.gyp:zlib',
@@ skipping 51 matching lines @@
           'defines': [
             'PNG_BUILD_DLL',
             'PNG_NO_MODULEDEF',
           ],
           'direct_dependent_settings': {
             'defines': [
               'PNG_USE_DLL',
             ],
           },          
         }],
+        ['OS=="win" and clang==1', {
+          'msvs_settings': {
+            'VCCLCompilerTool': {
+              'AdditionalOptions': [
+                '-Wno-self-assign',  # http://crbug.com/505306.

[Nico, 2015/06/29 23:51:02]

Likewise – add a

  'variables': {
    'clang_warning_flags': [ '-Wno-self-assign' ]
  }

block to the target instead

[scottmg, 2015/06/30 00:32:55]

Done.

+              ],
+            },
+          },
+        }],
         ['OS=="android"', {
           'toolsets': ['target', 'host'],
           'defines': [
             'CHROME_PNG_READ_PACK_SUPPORT',  # Required by freetype.
           ],
           'direct_dependent_settings': {
             'defines': [
               'CHROME_PNG_READ_PACK_SUPPORT',
             ],
           },
         }],
       ],
     },
   ]
 }