First patch in making destructors of refcounted objects private.

app/gfx/font.h

 // Copyright (c) 2006-2008 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 APP_GFX_FONT_H_
 #define APP_GFX_FONT_H_
 
 #include "build/build_config.h"
 
 #include <string>
@@ skipping 151 matching lines @@
   class HFontRef : public base::RefCounted<HFontRef> {
    public:
     // This constructor takes control of the HFONT, and will delete it when
     // the HFontRef is deleted.
     HFontRef(HFONT hfont,
              int height,
              int baseline,
              int ave_char_width,
              int style,
              int dlu_base_x);
-    ~HFontRef();
 
     // Accessors
     HFONT hfont() const { return hfont_; }
     int height() const { return height_; }
     int baseline() const { return baseline_; }
     int ave_char_width() const { return ave_char_width_; }
     int style() const { return style_; }
     int dlu_base_x() const { return dlu_base_x_; }
     const std::wstring& font_name() const { return font_name_; }
 
    private:
+    friend class  base::RefCounted<HFontRef>;
+
+    ~HFontRef();
+
     const HFONT hfont_;
     const int height_;
     const int baseline_;
     const int ave_char_width_;
     const int style_;
     // Constants used in converting dialog units to pixels.
     const int dlu_base_x_;
     std::wstring font_name_;
 
     DISALLOW_COPY_AND_ASSIGN(HFontRef);
@@ skipping 66 matching lines @@
   int height_;
   int ascent_;
   int avg_width_;
 #endif
 
 };
 
 }  // namespace gfx
 
 #endif  // APP_GFX_FONT_H_