Simplify accelerated paint and remove windows CanvasSkiaPaint

ui/gfx/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 39 matching lines @@
     "animation/tween.cc",
     "animation/tween.h",
     "blit.cc",
     "blit.h",
     "break_list.h",
     "canvas.cc",
     "canvas.h",
     "canvas_notimplemented.cc",
     "canvas_paint_mac.h",
     "canvas_paint_mac.mm",
-    "canvas_paint_win.cc",
-    "canvas_paint_win.h",
     "canvas_skia.cc",
     "canvas_skia_paint.h",
     "codec/jpeg_codec.cc",
     "codec/jpeg_codec.h",
     "codec/png_codec.cc",
     "codec/png_codec.h",
     "color_analysis.cc",
     "color_analysis.h",
     "color_profile.cc",
     "color_profile.h",
@@ skipping 474 matching lines @@
 if (is_android) {
   generate_jni("gfx_jni_headers") {
     sources = [
       "../android/java/src/org/chromium/ui/gfx/BitmapHelper.java",
       "../android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java",
       "../android/java/src/org/chromium/ui/gfx/ViewConfigurationHelper.java",
     ]
     jni_package = "gfx"
   }
 }