Rename: background_is_transparent -> subpixel_rendering_enabled

ui/gfx/canvas_skia.cc

Index: ui/gfx/canvas_skia.cc
diff --git a/ui/gfx/canvas_skia.cc b/ui/gfx/canvas_skia.cc
index 73f5992406cbed173b8676ea7863fbd7c616a1d6..3de9b939bd19cefadda1b84d87999c1902eed241 100644
--- a/ui/gfx/canvas_skia.cc
+++ b/ui/gfx/canvas_skia.cc
@@ -142,8 +142,8 @@ void UpdateRenderText(const Rect& rect,
   else
     render_text->SetHorizontalAlignment(ALIGN_LEFT);
 
-  if (flags & Canvas::NO_SUBPIXEL_RENDERING)
-    render_text->set_background_is_transparent(true);
+  render_text->set_subpixel_rendering_suppressed(
+      (flags & Canvas::NO_SUBPIXEL_RENDERING) != 0);
 
   render_text->SetColor(color);
   const int font_style = font_list.GetFontStyle();