Adds ability to build for asan with gn

third_party/protobuf/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.
 
 if (is_win) {
   config_h_dir = "vsprojects"
 } else {
   config_h_dir = "."
 }
 
@@ skipping 238 matching lines @@
     if (is_win) {
       # This is defined internally, don't warn on duplicate.
       configs -= [ "//build/config/win:lean_and_mean" ]
     }
 
     cflags = protobuf_lite_cflags
 
     deps = [
       ":protobuf_full",
     ]
+    deps += [ "//build/config/sanitizers:deps" ]
   }
 }