Rename: background_is_transparent -> subpixel_rendering_enabled

ui/gfx/render_text_harfbuzz.cc

Index: ui/gfx/render_text_harfbuzz.cc
diff --git a/ui/gfx/render_text_harfbuzz.cc b/ui/gfx/render_text_harfbuzz.cc
index 51322161e5559adf9c7ce8d15dd6f8b0b4219ccc..06d86e811f2357b14286b5b3e56db9acda90029c 100644
--- a/ui/gfx/render_text_harfbuzz.cc
+++ b/ui/gfx/render_text_harfbuzz.cc
@@ -1009,7 +1009,7 @@ void RenderTextHarfBuzz::DrawVisualText(Canvas* canvas) {
       renderer.SetTypeface(run.skia_face.get());
       renderer.SetTextSize(SkIntToScalar(run.font_size));
       renderer.SetFontRenderParams(run.render_params,
-                                   background_is_transparent());
+                                   subpixel_rendering_enabled());
       Range glyphs_range = run.CharRangeToGlyphRange(segment.char_range);
       scoped_ptr<SkPoint[]> positions(new SkPoint[glyphs_range.length()]);
       SkScalar offset_x =
@@ -1297,7 +1297,7 @@ bool RenderTextHarfBuzz::ShapeRunWithFont(const base::string16& text,
 
   hb_font_t* harfbuzz_font = CreateHarfBuzzFont(
       run->skia_face.get(), SkIntToScalar(run->font_size), run->render_params,
-      background_is_transparent());
+      subpixel_rendering_enabled());
 
   // TODO(vadimt): Remove ScopedTracker below once crbug.com/431326 is fixed.
   tracked_objects::ScopedTracker tracking_profile1(