[Android] Generate scripts at build time to run android tests.

ui/base/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")
 import("//testing/test.gni")
 
 if (is_android) {
   import("//build/config/android/config.gni")
   import("//build/config/android/rules.gni")
@@ skipping 743 matching lines @@
       "oleacc.lib",
     ]
   }
 
   if (!is_win || !use_aura) {
     sources -= [ "view_prop_unittest.cc" ]
   }
 
   if (is_android) {
     apk_deps = [ "//chrome:resources" ]
+    isolate_file = "ui_base_unittests.isolate"
   }
 
   if (use_pango) {
     configs += [ "//build/config/linux:pangocairo" ]
   }
 
   if (use_x11) {
     sources += [ "cursor/cursor_loader_x11_unittest.cc" ]
 
     configs += [ "//build/config/linux:x11" ]
@@ skipping 32 matching lines @@
   }
 
   if (is_chromeos) {
     deps += [
       "//chromeos",
       "//ui/events:dom_keycode_converter",
     ]
   }
 }
 # TODO(GYP) Mac (ui_base_tests_bundle)