Make sure that net_perftest doesn't leave temporary files.

net/disk_cache/disk_cache_test_util.cc

 // Copyright (c) 2006-2008 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 "net/disk_cache/disk_cache_test_util.h"
 
+#include "base/logging.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "net/disk_cache/backend_impl.h"
 #include "net/disk_cache/cache_util.h"
 #include "net/disk_cache/file.h"
 
 using base::Time;
 using base::TimeDelta;
 
 std::string GenerateKey(bool same_length) {
@@ skipping 53 matching lines @@
 
 bool CheckCacheIntegrity(const std::wstring& path) {
   scoped_ptr<disk_cache::BackendImpl> cache(new disk_cache::BackendImpl(path));
   if (!cache.get())
     return false;
   if (!cache->Init())
     return false;
   return cache->SelfCheck() >= 0;
 }
 
+ScopedTestCache::ScopedTestCache() : path_(GetCachePath()) {
+  bool result = DeleteCache(path_.c_str());
+  DCHECK(result);
+}
+
+ScopedTestCache::~ScopedTestCache() {
+  file_util::Delete(path(), true);
+}
+
 // -----------------------------------------------------------------------
 
 int g_cache_tests_max_id = 0;
 volatile int g_cache_tests_received = 0;
 volatile bool g_cache_tests_error = 0;
 
 // On the actual callback, increase the number of tests received and check for
 // errors (an unexpected test received)
 void CallbackTest::RunWithParams(const Tuple1<int>& params) {
   if (id_ > g_cache_tests_max_id) {
@@ skipping 41 matching lines @@
   } else {
     // Not finished yet. See if we have to abort.
     if (last_ == g_cache_tests_received)
       num_iterations_++;
     else
       last_ = g_cache_tests_received;
     if (40 == num_iterations_)
       MessageLoop::current()->Quit();
   }
 }