Make Linux pass users' font settings through to renderer.

chrome/common/renderer_preferences.h

 // Copyright (c) 2006-2008 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.
 //
 // A struct for managing browser's settings that apply to the renderer or its
 // webview.  These differ from WebPreferences since they apply to Chromium's
 // glue layer rather than applying to just WebKit.
 //
 // Adding new values to this class probably involves updating
 // common/render_messages.h, browser/browser.cc, etc.
 
 #ifndef CHROME_COMMON_RENDERER_PREFERENCES_H_
 #define CHROME_COMMON_RENDERER_PREFERENCES_H_
 
+enum RendererPreferencesHintingEnum {
+  RENDERER_PREFERENCES_HINTING_SYSTEM_DEFAULT = 0,
+  RENDERER_PREFERENCES_HINTING_NONE,
+  RENDERER_PREFERENCES_HINTING_SLIGHT,
+  RENDERER_PREFERENCES_HINTING_MEDIUM,
+  RENDERER_PREFERENCES_HINTING_FULL,
+};
+
+enum RendererPreferencesSubpixelRenderingEnum {
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT = 0,
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_NONE,
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_RGB,
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_BGR,
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VRGB,
+  RENDERER_PREFERENCES_SUBPIXEL_RENDERING_VBGR,
+};
+
 struct RendererPreferences {
   // Whether the renderer's current browser context accept drops from the OS
   // that result in navigations away from the current page.
   bool can_accept_load_drops;
 
+  // Whether text should be antialiased.
+  // Currently only used by Linux.
+  bool should_antialias_text;
+
+  // The level of hinting to use when rendering text.
+  // Currently only used by Linux.
+  RendererPreferencesHintingEnum hinting;
+
+  // The type of subpixel rendering to use for text.
+  // Currently only used by Linux.
+  RendererPreferencesSubpixelRenderingEnum subpixel_rendering;
+
   RendererPreferences()
-      : can_accept_load_drops(true) {
+      : can_accept_load_drops(true),
+        should_antialias_text(true),
+        hinting(RENDERER_PREFERENCES_HINTING_SYSTEM_DEFAULT),
+        subpixel_rendering(
+            RENDERER_PREFERENCES_SUBPIXEL_RENDERING_SYSTEM_DEFAULT) {
   }
 };
 
 #endif  // CHROME_COMMON_RENDERER_PREFERENCES_H_