Cleanup warnings configs and enable more for Android ARM64

webrtc/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.
 
 # TODO(kjellander): Rebase this to webrtc/build/common.gypi changes after r6330.
 
@@ skipping 134 matching lines @@
       "HAVE_SCTP",
       "HAVE_SRTP",
       "HAVE_WEBRTC_VIDEO",
       "HAVE_WEBRTC_VOICE",
       "LOGGING_INSIDE_WEBRTC",
       "SSL_USE_OPENSSL",
       "USE_WEBRTC_DEV_BRANCH",
     ]
   } else {
     if (is_posix) {
-      # -Wextra is currently disabled in Chromium"s common.gypi. Enable
-      # for targets that can handle it. For Android/arm64 right now
-      # there will be an "enumeral and non-enumeral type in conditional
-      # expression" warning in android_tools/ndk_experimental"s version
-      # of stlport.
-      # See: https://code.google.com/p/chromium/issues/detail?id=379699
-      if (current_cpu != "arm64" || !is_android) {
-        cflags = [
-          "-Wextra",
+      # Enable more warnings: -Wextra is currently disabled in Chromium.
+      cflags = [
+        "-Wextra",
 
-          # We need to repeat some flags from Chromium"s common.gypi
-          # here that get overridden by -Wextra.
-          "-Wno-unused-parameter",
-          "-Wno-missing-field-initializers",
-          "-Wno-strict-overflow",
-        ]
-        cflags_cc = [
-          "-Wnon-virtual-dtor",
+        # Repeat some flags that get overridden by -Wextra.
+        "-Wno-unused-parameter",
+        "-Wno-missing-field-initializers",
+        "-Wno-strict-overflow",
+      ]
+      cflags_cc = [
+        "-Wnon-virtual-dtor",
 
-          # This is enabled for clang; enable for gcc as well.
-          "-Woverloaded-virtual",
-        ]
-      }
+        # This is enabled for clang; enable for gcc as well.
+        "-Woverloaded-virtual",
+      ]
     }
 
     if (is_clang) {
       cflags += [
         "-Wimplicit-fallthrough",
         "-Wthread-safety",
         "-Winconsistent-missing-override",
         "-Wundef",
       ]
     }
@@ skipping 590 matching lines @@
 
       deps = [
         "//base:base_java_test_support",
         "//webrtc/api:libjingle_peerconnection_java",
         "//webrtc/api:libjingle_peerconnection_jni",
         "//webrtc/examples:AppRTCMobile_javalib",
       ]
     }
   }
 }