Call scoped_refptr<T>::get() rather than relying on implicit "operator T*"

webkit/browser/fileapi/obfuscated_file_util.cc

Index: webkit/browser/fileapi/obfuscated_file_util.cc
diff --git a/webkit/browser/fileapi/obfuscated_file_util.cc b/webkit/browser/fileapi/obfuscated_file_util.cc
index 2636d6ee0e32de323b6c23e5f9375d80a51b8fc2..c949a97f9b5390a15e10686557ed0d8271784d7d 100644
--- a/webkit/browser/fileapi/obfuscated_file_util.cc
+++ b/webkit/browser/fileapi/obfuscated_file_util.cc
@@ -1234,7 +1234,7 @@ std::string ObfuscatedFileUtil::GetDirectoryDatabaseKey(
     return std::string();
   }
   // For isolated origin we just use a type string as a key.
-  if (special_storage_policy_ &&
+  if (special_storage_policy_.get() &&
       special_storage_policy_->HasIsolatedStorage(origin)) {
     return type_string;
   }