linux: Round font sizes when going from points to pixels.

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>
 
@@ skipping 34 matching lines @@
 
 // Configures |layout| for the passed-in parameters.
 void SetUpPangoLayout(
     PangoLayout* layout,
     const base::string16& text,
     const FontList& font_list,
     base::i18n::TextDirection text_direction,
     int flags);
 
 // Returns the size in pixels for the specified |pango_font|.
-size_t GetPangoFontSizeInPixels(PangoFontDescription* pango_font);
+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_