[gn] Add fuzzer targets.

BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/mips.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 if (is_android) {
@@ skipping 1989 matching lines @@
 
   deps = [
     ":v8_maybe_snapshot",
   ]
 
   public_deps = [
     ":v8_libplatform",
   ]
 }
 
+v8_source_set("simple_fuzzer") {
+  sources = [
+    "test/fuzzer/fuzzer.cc",
+  ]
+
+  configs = [ ":internal_config_base" ]
+}
+
 ###############################################################################
 # Executables
 #
 
 if (current_toolchain == v8_snapshot_toolchain) {
   executable("mksnapshot") {
     visibility = [ ":*" ]  # Only targets in this file can depend on this.
 
     sources = [
       "src/snapshot/mksnapshot.cc",
@@ skipping 25 matching lines @@
     (current_toolchain == host_toolchain && v8_toolset_for_shell == "host") ||
     (current_toolchain == v8_snapshot_toolchain &&
      v8_toolset_for_shell == "host") ||
     (current_toolchain != host_toolchain && v8_toolset_for_shell == "target"))
 
 group("gn_all") {
   testonly = true
 
   deps = [
     ":d8",
+    ":v8_simple_json_fuzzer",
+    ":v8_simple_parser_fuzzer",
+    ":v8_simple_regexp_fuzzer",
+    ":v8_simple_wasm_fuzzer",
+    ":v8_simple_wasm_asmjs_fuzzer",
   ]
 
   if (want_v8_shell) {
     deps += [
       ":v8_shell",
     ]
   }
 
   if (host_os != "mac" || !is_android) {
     # These items don't compile for Android on Mac.
@@ skipping 107 matching lines @@
       "//build/config/sanitizers:deps",
       "//build/win:default_exe_manifest",
     ]
 
     if (v8_enable_i18n_support) {
       deps += [ "//third_party/icu" ]
     }
   }
 }
 
+template("v8_fuzzer") {
+  name = target_name
+  forward_variables_from(invoker, "*")
+  executable("v8_simple_" + name) {
+    deps = [
+      ":" + name,
+      ":simple_fuzzer",
+    ]
+
+    configs += [ ":external_config" ]
+  }
+}
+
 v8_source_set("json_fuzzer") {
   sources = [
     "test/fuzzer/json.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
+v8_fuzzer("json_fuzzer") {}
+
 v8_source_set("parser_fuzzer") {
   sources = [
     "test/fuzzer/parser.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
+v8_fuzzer("parser_fuzzer") {}
+
 v8_source_set("regexp_fuzzer") {
   sources = [
     "test/fuzzer/regexp.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
+v8_fuzzer("regexp_fuzzer") {}
+
 v8_source_set("wasm_fuzzer") {
   sources = [
     "test/fuzzer/wasm.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
 
+v8_fuzzer("wasm_fuzzer") {}
+
 v8_source_set("wasm_asmjs_fuzzer") {
   sources = [
     "test/fuzzer/wasm-asmjs.cc",
   ]
 
   deps = [
     ":fuzzer_support",
   ]
 
   configs = [ ":internal_config" ]
 }
+
+v8_fuzzer("wasm_asmjs_fuzzer") {}