RenderTextHarfBuzz: Set font render parameters in font data functions

ui/gfx/render_text.cc

Index: ui/gfx/render_text.cc
diff --git a/ui/gfx/render_text.cc b/ui/gfx/render_text.cc
index 807f8cd12ebe8d5b2579c25df00b65947789bc13..615c7aa9aaa98a1ac20cbb19319ffc0e75058baf 100644
--- a/ui/gfx/render_text.cc
+++ b/ui/gfx/render_text.cc
@@ -211,14 +211,11 @@ void SkiaTextRenderer::SetDrawLooper(SkDrawLooper* draw_looper) {
   paint_.setLooper(draw_looper);
 }
 
-void SkiaTextRenderer::SetFontRenderParams(const FontRenderParams& params,
+void SkiaTextRenderer::SetFontRenderParams(FontRenderParams params,
                                            bool background_is_transparent) {
-  paint_.setAntiAlias(params.antialiasing);
-  paint_.setLCDRenderText(!background_is_transparent &&
-      params.subpixel_rendering != FontRenderParams::SUBPIXEL_RENDERING_NONE);
-  paint_.setSubpixelText(params.subpixel_positioning);
-  paint_.setAutohinted(params.autohinter);
-  paint_.setHinting(FontRenderParamsHintingToSkPaintHinting(params.hinting));
+  if (background_is_transparent)
+    params.subpixel_rendering = FontRenderParams::SUBPIXEL_RENDERING_NONE;
+  ApplyRenderParams(params, &paint_);
 }
 
 void SkiaTextRenderer::SetTypeface(SkTypeface* typeface) {
@@ -416,6 +413,15 @@ skia::RefPtr<SkTypeface> CreateSkiaTypeface(const std::string& family,
   return skia::AdoptRef(SkTypeface::CreateFromName(family.c_str(), skia_style));
 }
 
+void ApplyRenderParams(const FontRenderParams& params, SkPaint* paint) {
+  paint->setAntiAlias(params.antialiasing);
+  paint->setLCDRenderText(
+      params.subpixel_rendering != FontRenderParams::SUBPIXEL_RENDERING_NONE);
+  paint->setSubpixelText(params.subpixel_positioning);
+  paint->setAutohinted(params.autohinter);
+  paint->setHinting(FontRenderParamsHintingToSkPaintHinting(params.hinting));
+}
+
 }  // namespace internal
 
 RenderText::~RenderText() {