Adds more BUILD.gns to ash

ash/common/test/BUILD.gn

+# Copyright 2016 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.
+
+static_library("test_support") {
+  testonly = true
+  sources = [
+    "ash_test.cc",
+    "ash_test.h",
+    "ash_test_impl.h",
+    "material_design_controller_test_api.cc",
+    "material_design_controller_test_api.h",
+    "test_palette_delegate.cc",
+    "test_palette_delegate.h",
+    "test_session_state_delegate.cc",
+    "test_session_state_delegate.h",
+    "test_volume_control_delegate.cc",
+    "test_volume_control_delegate.h",
+  ]
+  configs += [ "//build/config:precompiled_headers" ]
+
+  public_deps = [
+    "//testing/gtest",
+  ]
+  deps = [
+    "//ash",
+    "//base",
+    "//components/signin/core/account_id",
+    "//components/user_manager",
+
+    # TODO: this is for ui/wm/public/window_types.h, which is in aura.
+    # http://crbug.com/654078.
+    "//ui/aura",
+    "//ui/display",
+    "//ui/gfx/geometry",
+    "//ui/views",
+    "//ui/wm",
+  ]
+}