Add skia::RefPtr class to wrap ref counted classes from Skia.

chrome/common/badge_util.cc

 // 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.
 
 #include "chrome/common/badge_util.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "third_party/skia/include/core/SkTypeface.h"
@@ skipping 10 matching lines @@
 #else
   const char kPreferredTypeface[] = "Arial";
 #endif
 
   static SkPaint* text_paint = NULL;
   if (!text_paint) {
     text_paint = new SkPaint;
     text_paint->setAntiAlias(true);
     text_paint->setTextAlign(SkPaint::kLeft_Align);
 
-    SkTypeface* typeface = SkTypeface::CreateFromName(
+    skia::RefPtr<SkTypeface> typeface = SkTypeface::CreateFromName(
         kPreferredTypeface, SkTypeface::kBold);
     // Skia doesn't do any font fallback---if the user is missing the font then
     // typeface will be NULL. If we don't do manual fallback then we'll crash.
     if (typeface) {
       text_paint->setFakeBoldText(true);
     } else {
       // Fall back to the system font. We don't bold it because we aren't sure
       // how it will look.
       // For the most part this code path will only be hit on Linux systems
       // that don't have Arial.
       ResourceBundle& rb = ResourceBundle::GetSharedInstance();
       const gfx::Font& base_font = rb.GetFont(ResourceBundle::BaseFont);
       typeface = SkTypeface::CreateFromName(
           base_font.GetFontName().c_str(), SkTypeface::kNormal);
       DCHECK(typeface);
     }
 
-    text_paint->setTypeface(typeface);
+    text_paint->setTypeface(typeface.get());
     // |text_paint| adds its own ref. Release the ref from CreateFontName.
-    typeface->unref();
   }
   return text_paint;
 }
 
 SkBitmap DrawBadgeIconOverlay(const SkBitmap& icon,
                               float font_size,
                               const string16& text,
                               const string16& fallback) {
   const int kMinPadding = 1;
 
@@ skipping 32 matching lines @@
   SkScalar x = (badge_width - text_width)/2;
   SkScalar y = (icon.height() - font_size)/2 + font_size - 1;
   canvas->sk_canvas()->drawText(
       badge_text.c_str(), badge_text.size(), x, y, *paint);
 
   // Return the generated image.
   return canvas->ExtractImageRep().sk_bitmap();
 }
 
 }  // namespace badge_util