Add more test binaries to GN Mac build.

third_party/mesa/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/ui.gni")
 
 config("mesa_headers_config") {
   include_dirs = [ "src/include" ]
   if (use_x11) {
     defines = [ "MESA_EGL_NO_X11_HEADERS" ]
@@ skipping 669 matching lines @@
 }
 
 if (!is_android) {  # TODO(GYP) enable for Android.
   # Building this target will hide the native OpenGL shared library and
   # replace it with a slow software renderer.
   #
   # Note: on x64 Windows this target gives warnings to the effect of:
   #   osmesa.osmesa.obj : warning LNK4197: export 'OSMesaGetIntegerv' specified
   #   multiple times; using first specification
   # This also happens with the GYP build.
-  shared_library("osmesa") {
+  loadable_module("osmesa") {
     sources = [
       "src/src/mesa/drivers/common/driverfuncs.c",
       "src/src/mesa/drivers/common/driverfuncs.h",
       "src/src/mesa/drivers/common/meta.c",
       "src/src/mesa/drivers/common/meta.h",
       "src/src/mesa/drivers/osmesa/osmesa.c",
     ]
 
     configs -= [ "//build/config/compiler:chromium_code" ]
     configs += [
@@ skipping 32 matching lines @@
         "KEYWORD2=GLAPIENTRY",
       ]
     }
   }
 } else {
   #  Placeholder to allow targets to unconditionally depend on this.
   group("osmesa") {
   }
 }  # !is_android
 # TODO(GYP) Android osmesa_in_lib_dir target.