Reland r285145: Remove RendererPreferences font-rendering enums.

ui/gfx/font_render_params.cc

 // 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.
 
 #include "ui/gfx/font_render_params.h"
 
 namespace gfx {
 
 FontRenderParams::FontRenderParams()
     : antialiasing(true),
       subpixel_positioning(true),
-      autohinter(true),
-      use_bitmaps(true),
-      hinting(HINTING_SLIGHT),
-      subpixel_rendering(SUBPIXEL_RENDERING_RGB) {
+      autohinter(false),
+      use_bitmaps(false),
+      hinting(HINTING_MEDIUM),
+      subpixel_rendering(SUBPIXEL_RENDERING_NONE) {
 }
 
 FontRenderParams::~FontRenderParams() {}
 
 FontRenderParamsQuery::FontRenderParamsQuery(bool for_web_contents)
     : for_web_contents(for_web_contents),
       pixel_size(0),
       point_size(0),
       style(-1) {
 }
 
 FontRenderParamsQuery::~FontRenderParamsQuery() {}
 
 }  // namespace gfx