Add flag to enable rendering of text using signed distance fields.

content/renderer/gpu/render_widget_compositor.cc

Index: content/renderer/gpu/render_widget_compositor.cc
diff --git a/content/renderer/gpu/render_widget_compositor.cc b/content/renderer/gpu/render_widget_compositor.cc
index 0916ac98da6e8274bb0315a0ab1eaa31a026352f..f5355ba695ff1961ffb75151f8c33f0ea6ad4f12 100644
--- a/content/renderer/gpu/render_widget_compositor.cc
+++ b/content/renderer/gpu/render_widget_compositor.cc
@@ -151,6 +151,8 @@ scoped_ptr<RenderWidgetCompositor> RenderWidgetCompositor::Create(
         render_thread->is_gpu_rasterization_enabled();
     settings.create_low_res_tiling = render_thread->is_low_res_tiling_enabled();
     settings.can_use_lcd_text = render_thread->is_lcd_text_enabled();
+    settings.use_distance_field_text =
+        render_thread->is_distance_field_text_enabled();
     settings.use_zero_copy = render_thread->is_zero_copy_enabled();
     settings.use_one_copy = render_thread->is_one_copy_enabled();
   }