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

chrome/common/badge_util.cc

Index: chrome/common/badge_util.cc
diff --git a/chrome/common/badge_util.cc b/chrome/common/badge_util.cc
index e33f8d43edde2fc4b085fba9ed7362bedff54598..bd124d156a1fda84e724ad4a0afb7e3fd6a65a92 100644
--- a/chrome/common/badge_util.cc
+++ b/chrome/common/badge_util.cc
@@ -28,7 +28,7 @@ SkPaint* GetBadgeTextPaintSingleton() {
     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.
@@ -46,9 +46,8 @@ SkPaint* GetBadgeTextPaintSingleton() {
       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;
 }