Allow default font size changing on Linux.

content/renderer/render_view_linux.cc

 // Copyright (c) 2012 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/renderer/render_view_impl.h"
 
 #include "content/public/common/renderer_preferences.h"
 #include "third_party/WebKit/public/web/linux/WebFontRendering.h"
 #include "ui/gfx/font_render_params.h"
 
 using blink::WebFontRendering;
 
 namespace content {
 
 namespace {
 
+const int kMaxDefaultFontSize = 999;
+
 SkPaint::Hinting RendererPreferencesToSkiaHinting(
     const RendererPreferences& prefs) {
   if (!prefs.should_antialias_text) {
     // When anti-aliasing is off, GTK maps all non-zero hinting settings to
     // 'Normal' hinting so we do the same. Otherwise, folks who have 'Slight'
     // hinting selected will see readable text in everything expect Chromium.
     switch (prefs.hinting) {
       case gfx::FontRenderParams::HINTING_NONE:
         return SkPaint::kNo_Hinting;
       case gfx::FontRenderParams::HINTING_SLIGHT:
@@ skipping 28 matching lines @@
       gfx::FontRenderParams::SubpixelRenderingToSkiaLCDOrder(
           prefs.subpixel_rendering));
   WebFontRendering::setLCDOrientation(
       gfx::FontRenderParams::SubpixelRenderingToSkiaLCDOrientation(
           prefs.subpixel_rendering));
   WebFontRendering::setAntiAlias(prefs.should_antialias_text);
   WebFontRendering::setSubpixelRendering(
       prefs.subpixel_rendering !=
       gfx::FontRenderParams::SUBPIXEL_RENDERING_NONE);
   WebFontRendering::setSubpixelPositioning(prefs.use_subpixel_positioning);
+  if (prefs.default_font_size > 0 &&
+      prefs.default_font_size <= kMaxDefaultFontSize) {
+    WebFontRendering::setDefaultFontSize(prefs.default_font_size);
+  }
 }
 
 }  // namespace content