Use base::Callback in Quota related code.

webkit/quota/quota_temporary_storage_evictor.h

Index: webkit/quota/quota_temporary_storage_evictor.h
diff --git a/webkit/quota/quota_temporary_storage_evictor.h b/webkit/quota/quota_temporary_storage_evictor.h
index 6492227cbedd087ca7056a3e42049f5fd1118f19..8cdb45e30e8b3a4adbe1f4b55937a5bd433d2540 100644
--- a/webkit/quota/quota_temporary_storage_evictor.h
+++ b/webkit/quota/quota_temporary_storage_evictor.h
@@ -9,7 +9,7 @@
 #include <map>
 #include <string>
 
-#include "base/memory/scoped_callback_factory.h"
+#include "base/memory/weak_ptr.h"
 #include "base/threading/non_thread_safe.h"
 #include "base/timer.h"
 #include "webkit/quota/quota_types.h"
@@ -126,7 +126,7 @@ class QuotaTemporaryStorageEvictor : public base::NonThreadSafe {
   base::OneShotTimer<QuotaTemporaryStorageEvictor> eviction_timer_;
   base::RepeatingTimer<QuotaTemporaryStorageEvictor> histogram_timer_;
 
-  base::ScopedCallbackFactory<QuotaTemporaryStorageEvictor> callback_factory_;
+  base::WeakPtrFactory<QuotaTemporaryStorageEvictor> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(QuotaTemporaryStorageEvictor);
 };