Fix net/ fuzzers.

net/BUILD.gn

 # Copyright (c) 2013 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/buildflag_header.gni")
 import("//build/config/chromecast_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
@@ skipping 1731 matching lines @@
     if (use_v8_in_net) {
       deps += [ ":net_with_v8" ]
     } else {
       sources -= [ "proxy/proxy_resolver_perftest.cc" ]
     }
   }
 }
 
 # Fuzzers
 
-static_library("net_fuzzer_test_support") {
+source_set("net_fuzzer_test_support") {

[brettw, 2016/07/15 17:01:38]

You should comment why this needs to be the case or I will likely change it back
in my next pass!

[mmenke, 2016/07/15 17:05:15]

Is something like "Making this a static_library breaks initialization of globals
in fuzzer_test_support.cc, so this must be a source_set" sufficient?  I'm not
good enough with compiler/linker-foo to give a more detailed comment.

   testonly = true
 
   sources = [
     "base/fuzzed_data_provider.cc",
     "base/fuzzed_data_provider.h",
     "base/fuzzer_test_support.cc",
     "socket/fuzzed_socket.cc",
     "socket/fuzzed_socket.h",
     "socket/fuzzed_socket_factory.cc",
     "socket/fuzzed_socket_factory.h",
@@ skipping 318 matching lines @@
     "url_request/url_request_fuzzer.cc",
   ]
   deps = [
     ":net_fuzzer_test_support",
     ":test_support",
     "//base",
     "//net",
   ]
   dict = "data/fuzzer_dictionaries/net_url_request_fuzzer.dict"
 }