Harmonize WebRTC gyp and gn flags.

webrtc/base/BUILD.gn

 # Copyright (c) 2014 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/ui.gni")
@@ skipping 490 matching lines @@
       # When defined changes the include path for json.h to where it is
       # expected to be when building json outside of the standalone build.
       defines += [ "WEBRTC_EXTERNAL_JSON" ]
     }
   }  # !build_with_chromium
 
   # TODO(henrike): issue 3307, make rtc_base build with the Chromium default
   # compiler settings.
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
-  if (!is_win) {
-    cflags += [ "-Wno-uninitialized" ]
-  }
 
   if (rtc_build_ssl) {
     deps += [ "//third_party/boringssl" ]
   } else {
     configs += [ "external_ssl_library" ]
   }
 
   if (is_android) {
     sources += [
       "ifaddrs-android.cc",
@@ skipping 169 matching lines @@
       "java/src/org/webrtc/Logging.java",
       "java/src/org/webrtc/Size.java",
       "java/src/org/webrtc/ThreadUtils.java",
     ]
 
     deps = [
       "//base:base_java",
     ]
   }
 }