Implement rewrite logic for assigning a temporary scoped_refptr to T*.

tools/clang/rewrite_scoped_refptr/tests/test1-original.cc

Index: tools/clang/rewrite_scoped_refptr/tests/test1-original.cc
diff --git a/tools/clang/rewrite_scoped_refptr/tests/test1-original.cc b/tools/clang/rewrite_scoped_refptr/tests/test1-original.cc
deleted file mode 100644
index cafcfcc03550c080522956708ae28f8afa302fa6..0000000000000000000000000000000000000000
--- a/tools/clang/rewrite_scoped_refptr/tests/test1-original.cc
+++ /dev/null
@@ -1,16 +0,0 @@
-// Copyright (c) 2013 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 "scoped_refptr.h"
-
-struct Foo {
-  int dummy;
-};
-
-// Case 1: An example of an unsafe conversion, where the object is freed by
-// the time the function returns.
-Foo* GetBuggyFoo() {
-  scoped_refptr<Foo> unsafe(new Foo);
-  return unsafe;
-}