cc: Move SkShader construction to a single spot in PaintShader

ash/touch_hud/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.
 
 import("//build/config/ui.gni")
 
 component("touch_hud") {
   sources = [
     "ash_touch_hud_export.h",
     "touch_hud_renderer.cc",
     "touch_hud_renderer.h",
   ]
 
   defines = [ "ASH_TOUCH_HUD_IMPLEMENTATION" ]
 
   deps = [
     "//base",
+    "//cc/paint",
     "//skia",
     "//ui/compositor",
     "//ui/events",
     "//ui/gfx",
     "//ui/gfx/geometry",
     "//ui/views",
   ]
 }