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

content/renderer/render_view_win.cc

Index: content/renderer/render_view_win.cc
diff --git a/content/renderer/render_view_win.cc b/content/renderer/render_view_win.cc
index 3bef28e660e8776305a6f74ed98d302d9012fb18..321200d19f1d4eb13e4b675070646cdc6cf097a4 100644
--- a/content/renderer/render_view_win.cc
+++ b/content/renderer/render_view_win.cc
@@ -40,12 +40,4 @@ void RenderViewImpl::UpdateFontRenderingFromRendererPrefs() {
       != 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