Fix all -Wnon-virtual-dtor warnings.

webrtc/media/media.gyp

 # Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 {
   'includes': [ '../build/common.gypi', ],
@@ skipping 89 matching lines @@
       ],
       # TODO(kjellander): Make the code compile without disabling these flags.
       # See https://bugs.chromium.org/p/webrtc/issues/detail?id=3307
       'cflags': [
         '-Wno-deprecated-declarations',
       ],
       'cflags!': [
         '-Wextra',
       ],
       'cflags_cc!': [
-        '-Wnon-virtual-dtor',
         '-Woverloaded-virtual',
       ],
       'msvs_disabled_warnings': [
         4245,  # conversion from 'int' to 'size_t', signed/unsigned mismatch.
         4267,  # conversion from 'size_t' to 'int', possible loss of data.
         4389,  # signed/unsigned mismatch.
       ],
       'conditions': [
         ['build_libyuv==1', {
           'dependencies': ['<(DEPTH)/third_party/libyuv/libyuv.gyp:libyuv',],
@@ skipping 120 matching lines @@
             'base/testutils.h',
             'engine/fakewebrtccall.cc',
             'engine/fakewebrtccall.h',
             'engine/fakewebrtccommon.h',
             'engine/fakewebrtcdeviceinfo.h',
             'engine/fakewebrtcvcmfactory.h',
             'engine/fakewebrtcvideocapturemodule.h',
             'engine/fakewebrtcvideoengine.h',
             'engine/fakewebrtcvoiceengine.h',
           ],
-          # TODO(kjellander): Make the code compile without disabling these flags.
-          # See https://bugs.chromium.org/p/webrtc/issues/detail?id=3307
-          'cflags_cc!': [
-            '-Wnon-virtual-dtor',
-          ],
         },  # target rtc_unittest_main
         {
           'target_name': 'rtc_media_unittests',
           'type': 'executable',
           'dependencies': [
             '<(webrtc_root)/base/base_tests.gyp:rtc_base_tests_utils',
             '<(webrtc_root)/media/media.gyp:rtc_media',
             'rtc_unittest_main',
           ],
           'sources': [
@@ skipping 18 matching lines @@
             'engine/webrtcvideoengine2_unittest.cc',
             'engine/webrtcvoiceengine_unittest.cc',
             'sctp/sctpdataengine_unittest.cc',
           ],
           # TODO(kjellander): Make the code compile without disabling these flags.
           # See https://bugs.chromium.org/p/webrtc/issues/detail?id=3307
           'cflags': [
             '-Wno-sign-compare',
           ],
           'cflags_cc!': [
-            '-Wnon-virtual-dtor',
             '-Woverloaded-virtual',
           ],
           'msvs_disabled_warnings': [
             4245,  # conversion from 'int' to 'uint32_t', signed/unsigned mismatch.
             4389,  # signed/unsigned mismatch.
           ],
           'conditions': [
             ['OS=="win"', {
               'msvs_settings': {
                 'VCLinkerTool': {
@@ skipping 60 matching lines @@
               'sources': [
                 'rtc_media_unittests.isolate',
               ],
             },
           ],
         }],
       ],  # conditions
     }],  # include_tests==1
   ],  # conditions
 }