Suppress RTTI in protobuf2, now that RTTI is disabled on Mac and Linux (r2330...

third_party/protobuf2/protobuf.gyp

 # Copyright (c) 2009 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.
 
 {
   'includes': [
     '../../build/common.gypi',
   ],
   'targets': [
     { 'target_name': 'protobuf',
@@ skipping 55 matching lines @@
         'src/src/google/protobuf/io/coded_stream.cc',
         'src/src/google/protobuf/io/gzip_stream.cc',
         'src/src/google/protobuf/io/printer.cc',
         'src/src/google/protobuf/io/tokenizer.cc',
         'src/src/google/protobuf/io/zero_copy_stream.cc',
         'src/src/google/protobuf/io/zero_copy_stream_impl.cc',
         'src/src/google/protobuf/compiler/importer.cc',
         'src/src/google/protobuf/compiler/parser.cc',
       ],
 
+      'conditions': [
+        ['OS != "win"', {
+          # src/src/google/protobuf/generated_message_reflection.h can figure
+          # out whether RTTI is enabled or disabled via compiler-defined macros
+          # when building with MSVC.  For other compilers, this macro must be
+          # defined to suppress the use of dynamic_cast<>, which requires RTTI.
+          'defines': [
+            'GOOGLE_PROTOBUF_NO_RTTI',
+          ],
+        }],
+      ],
+
       'include_dirs': [
         '.',
         'src/src',
       ],
 
       'direct_dependent_settings': {
         'include_dirs': [
           '.',
           'src/src',
         ],
@@ skipping 56 matching lines @@
         'protobuf',
       ],
 
       'include_dirs': [
         '.',
         'src/src',
       ],
     },
   ],
  }