Use the Chromium libfuzzer template instead of rolling our own.

webrtc/test/fuzzers/BUILD.gn

 # Copyright (c) 2015 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/features.gni")
-import("webrtc_fuzzer.gni")
+import("//testing/test.gni")
+import("//testing/libfuzzer/fuzzer_test.gni")
 
 static_library("webrtc_fuzzer_main") {
   public_configs = [ "../..:common_inherited_config" ]
   sources = [
     "webrtc_fuzzer_main.cc",
   ]
   deps = [
     "../../system_wrappers:field_trial_default",
     "../../system_wrappers:metrics_default",
     "//testing/libfuzzer:libfuzzer_main",
   ]
 }
 
+template("webrtc_fuzzer_test") {
+  fuzzer_test(target_name) {
+    forward_variables_from(invoker, "*")
+    deps += [ ":webrtc_fuzzer_main" ]
+    if (is_clang) {
+      # Suppress warnings from Chrome's Clang plugins.
+      # See http://code.google.com/p/webrtc/issues/detail?id=163 for details
+      suppressed_configs = [ "//build/config/clang:find_bad_constructs" ]
+    }
+  }
+}
+
 webrtc_fuzzer_test("h264_depacketizer_fuzzer") {
   sources = [
     "h264_depacketizer_fuzzer.cc",
   ]
   deps = [
     "../../modules/rtp_rtcp",
   ]
 }
 
 webrtc_fuzzer_test("vp8_depacketizer_fuzzer") {
@@ skipping 110 matching lines @@
 
 webrtc_fuzzer_test("audio_decoder_opus_redundant_fuzzer") {
   sources = [
     "audio_decoder_opus_redundant_fuzzer.cc",
   ]
   deps = [
     ":audio_decoder_fuzzer",
     "../../modules/audio_coding:webrtc_opus",
   ]
 }