Unify desktop Linux and Chrome OS font rendering params.

ui/gfx/pango_util.h

 // Copyright (c) 2012 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_PANGO_UTIL_H_
 #define UI_GFX_PANGO_UTIL_H_
 
 #include <cairo/cairo.h>
 #include <pango/pango.h>
 
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/strings/string16.h"
 #include "third_party/skia/include/core/SkColor.h"
 #include "ui/gfx/gfx_export.h"
 
 namespace gfx {
 
 class FontList;
 
 // Utility class to ensure that PangoFontDescription is freed.
 class ScopedPangoFontDescription {
  public:
   explicit ScopedPangoFontDescription(PangoFontDescription* description)
       : description_(description) {
     DCHECK(description);
   }
 
+  explicit ScopedPangoFontDescription(const std::string& str)
+      : description_(pango_font_description_from_string(str.c_str())) {
+    DCHECK(description_);
+  }
+
   ~ScopedPangoFontDescription() {
     pango_font_description_free(description_);
   }
 
   PangoFontDescription* get() { return description_; }
 
  private:
   PangoFontDescription* description_;
 
   DISALLOW_COPY_AND_ASSIGN(ScopedPangoFontDescription);
@@ skipping 16 matching lines @@
 int GetPangoFontSizeInPixels(PangoFontDescription* pango_font);
 
 // Retrieves the Pango metrics for a Pango font description. Caches the metrics
 // and never frees them. The metrics objects are relatively small and very
 // expensive to look up.
 PangoFontMetrics* GetPangoFontMetrics(PangoFontDescription* desc);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_PANGO_UTIL_H_