Apply hinting in SkiaTextRenderer::SetFontRenderParams().

ui/gfx/font_render_params.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_GFX_FONT_RENDER_PARAMS_H_
 #define UI_GFX_FONT_RENDER_PARAMS_H_
 
 #include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 
 // A collection of parameters describing how text should be rendered on Linux.
 struct GFX_EXPORT FontRenderParams {
-  // No constructor to avoid static initialization.
+  FontRenderParams();
+  ~FontRenderParams();
 
   // Level of hinting to be applied.
   enum Hinting {
     HINTING_NONE = 0,
     HINTING_SLIGHT,
     HINTING_MEDIUM,
     HINTING_FULL,
   };
 
   // Different subpixel orders to be used for subpixel rendering.
@@ skipping 36 matching lines @@
 
 // Returns the system's default parameters for WebKit subpixel positioning.
 // Subpixel positioning is special since neither GTK nor FontConfig currently
 // track it as a preference.
 // See https://bugs.freedesktop.org/show_bug.cgi?id=50736
 GFX_EXPORT bool GetDefaultWebkitSubpixelPositioning();
 
 }  // namespace gfx
 
 #endif  // UI_GFX_FONT_RENDER_PARAMS_H_