Force --enable-webkit-text-subpixel-positioning for DSF > 1.0.

ui/gfx/font_render_params_linux.cc

Index: ui/gfx/font_render_params_linux.cc
diff --git a/ui/gfx/font_render_params_linux.cc b/ui/gfx/font_render_params_linux.cc
index ed338d66cbcbc46f553d1afd3ec22bd40a0127a1..9f9440a8f6bbebebb32a60f298b19f55e337a722 100644
--- a/ui/gfx/font_render_params_linux.cc
+++ b/ui/gfx/font_render_params_linux.cc
@@ -248,13 +248,7 @@ FontRenderParams GetFontRenderParams(const FontRenderParamsQuery& query,
     params.subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_NONE;
     params.subpixel_positioning = false;
   } else {
-    // Fontconfig doesn't support configuring subpixel positioning; check a
-    // flag.
-    params.subpixel_positioning =
-        actual_query.for_web_contents

[sadrul, 2015/03/31 18:20:06]

Looks like this was the only use of |FondRenderParamsQuery::for_web_contents|?
Can this now be removed?

[stapelberg, 2015/03/31 18:29:29]

Yes, I think so. I’ll do that in a separate CL though, since it touches a lot of
files and would delay landing this change significantly. :)

-            ? base::CommandLine::ForCurrentProcess()->HasSwitch(
-                  switches::kEnableWebkitTextSubpixelPositioning)
-            : actual_query.device_scale_factor > 1.0f;
+    params.subpixel_positioning = actual_query.device_scale_factor > 1.0f;
 
     // To enable subpixel positioning, we need to disable hinting.
     if (params.subpixel_positioning)