Update several clang warnings after r287092.

third_party/yasm/yasm.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.
 
 # The yasm build process creates a slew of small C subprograms that
 # dynamically generate files at various point in the build process.  This makes
 # the build integration moderately complex.
 #
 # There are three classes of dynamically generated files:
 #   1) C source files that should be included in the build (eg., lc3bid.c)
@@ skipping 53 matching lines @@
       'dependencies': [
         'config_sources',
         'genmacro',
         'genmodule',
         'genperf',
         'genperf_libs',
         'generate_files',  # Needed to generate gperf and instruction files.
         'genstring',
         're2c',
       ],
+      'variables': {
+        'clang_warning_flags': [
+          # yasm passes a `const elf_machine_sym*` through `void*`.
+          '-Wno-incompatible-pointer-types',
+        ],
+      },
       'sources': [
          'source/patched-yasm/frontends/yasm/yasm-options.c',
          'source/patched-yasm/frontends/yasm/yasm.c',
          'source/patched-yasm/libyasm/assocdat.c',
          'source/patched-yasm/libyasm/bc-align.c',
          'source/patched-yasm/libyasm/bc-data.c',
          'source/patched-yasm/libyasm/bc-incbin.c',
          'source/patched-yasm/libyasm/bc-org.c',
          'source/patched-yasm/libyasm/bc-reserve.c',
          'source/patched-yasm/libyasm/bitvect.c',
@@ skipping 67 matching lines @@
          '<(shared_generated_dir)/x86cpu.c',
          '<(shared_generated_dir)/x86regtmod.c',
       ],
       'include_dirs': [
         '<@(yasm_include_dirs)',
         '<(shared_generated_dir)',
         '<(generated_dir)',
       ],
       'defines': [ '<@(yasm_defines)' ],
       'cflags': [ '<@(yasm_cflags)', ],
-      'conditions': [
-        ['clang==1', {
-          'xcode_settings': {
-            'WARNING_CFLAGS': [
-              # yasm passes a `const elf_machine_sym*` through `void*`.
-              '-Wno-incompatible-pointer-types',
-            ],
-          },
-          'cflags': [
-            '-Wno-incompatible-pointer-types',
-          ],
-        }],
-      ],
       'msvs_disabled_warnings': [ 4267 ],
       'rules': [
         {
           'rule_name': 'generate_gperf',
           'extension': 'gperf',
           'inputs': [ '<(PRODUCT_DIR)/'
                       '<(EXECUTABLE_PREFIX)genperf<(EXECUTABLE_SUFFIX)' ],
           'outputs': [
             '<(generated_dir)/<(RULE_INPUT_ROOT).c',
           ],
@@ skipping 385 matching lines @@
       'include_dirs': [
         '<@(yasm_include_dirs)',
 
       ],
       'cflags': [
         '-std=gnu99',
       ],
     },
   ],
 }