Fix some files in chrome directory for Windows GN build.

chrome/test/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/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 
 # This target exists to reference other test executables to bring these files
 # into the build.
@@ skipping 140 matching lines @@
       "//extensions:test_support",
     ]
   }
 
   if (is_linux) {
     deps += [ "//crypto:platform" ]
   }
   if (is_win) {
     deps += [
       "//third_party/wtl",
-      "//ui/snapshot:test_support",
     ]
     if (use_aura) {
       deps += [
         "//win8:test_registrar_constants",
         "//win8:test_support_win8",
       ]
     }
   }
 
   if (enable_plugins) {
@@ skipping 1003 matching lines @@
     # TODO(GYP) CDM adapter stuff.
     #if (enable_pepper_cdms) {
     #  deps += [
     #    "//media/cdm/ppapi:clearkeycdmadapter",
     #    "//ppapi:ppapi_cpp",
     #    "//third_party/widevine/cdm:adapter",
     #  ]
     #}
   }
 }