Fix scrollbar buttons at hidpi when enable-use-zoom-for-dsf is on.

content/renderer/render_view_win.cc

 // Copyright (c) 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.
 
 #include "content/public/common/renderer_preferences.h"
 #include "content/child/webthemeengine_impl_default.h"
 #include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/public/web/win/WebFontRendering.h"
 #include "ui/gfx/font_render_params.h"
 
@@ skipping 21 matching lines @@
   blink::WebFontRendering::setLCDOrientation(
       gfx::FontRenderParams::SubpixelRenderingToSkiaLCDOrientation(
           prefs.subpixel_rendering));
 
   blink::WebFontRendering::setAntialiasedTextEnabled(
       prefs.should_antialias_text);
   blink::WebFontRendering::setLCDTextEnabled(prefs.subpixel_rendering
       != gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE);
 }
 
-void RenderViewImpl::UpdateThemePrefs() {
-  WebThemeEngineImpl::cacheScrollBarMetrics(
-      renderer_preferences_.vertical_scroll_bar_width_in_dips,
-      renderer_preferences_.horizontal_scroll_bar_height_in_dips,
-      renderer_preferences_.arrow_bitmap_height_vertical_scroll_bar_in_dips,
-      renderer_preferences_.arrow_bitmap_width_horizontal_scroll_bar_in_dips);
-}
-
 }  // namespace content