ios: -Werror for third-party

third_party/sqlite/sqlite.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': {
     'use_system_sqlite%': 0,
     'required_sqlite_version': '3.6.1',
   },
   'target_defaults': {
@@ skipping 225 matching lines @@
             '../icu/icu.gyp:icui18n',
             '../icu/icu.gyp:icuuc',
           ],
           'defines': [
             # Necessary to statically compile the extension.
             'SQLITE_CORE',
           ],
           'sources': [
             'src/ext/icu/icu.c',
           ],
+          'variables': {
+            'clang_warning_flags_unset': [
+              # icu.c uses assert(!"foo") instead of assert(false && "foo")
+              '-Wstring-conversion',
+            ],
+          },
         },
       ],
     }],
     ['android_channel == "work"', {
       'target_defaults': {
         'defines': [
           'SQLITE_MAX_MMAP_SIZE=0',
         ],
       },
     }, { # else: android_channel != "work"
       'target_defaults': {
         'defines': [
           # Allow 256MB mmap footprint per connection.  Should not be too open-ended
           # as that could cause memory fragmentation.  50MB encompasses the 99th
           # percentile of Chrome databases in the wild.
           # TODO(shess): A 64-bit-specific value could be 1G or more.
           # TODO(shess): Figure out if exceeding this is costly.
           'SQLITE_MAX_MMAP_SIZE=268435456',
         ],
       },
     }],
   ],
 }