Test cache creation retry via public interface only.

net/disk_cache/disk_cache_test_base.cc

Index: net/disk_cache/disk_cache_test_base.cc
diff --git a/net/disk_cache/disk_cache_test_base.cc b/net/disk_cache/disk_cache_test_base.cc
index 6e04a9316ba9de660b3aa71402778b58e90bf7f5..38f7d8a088032d2997dde7890ac40ec334678a07 100644
--- a/net/disk_cache/disk_cache_test_base.cc
+++ b/net/disk_cache/disk_cache_test_base.cc
@@ -259,11 +259,7 @@ void DiskCacheTestWithCache::InitDiskCache() {
   CreateBackend(disk_cache::kNoRandom, &cache_thread_);
 }
 
-// Testing backend creation retry logic is hard because the CacheCreator and
-// cache backend(s) are tightly coupled. So we take the default backend often.
-// Tests themselves need to be adjusted for platforms where the BackendImpl is
-// not the default backend.
-void DiskCacheTestWithCache::InitDefaultCacheViaCreator() {
+void DiskCacheTestWithCache::CreateCacheViaPublicInterface() {
   if (!cache_thread_.IsRunning()) {
     ASSERT_TRUE(cache_thread_.StartWithOptions(
                     base::Thread::Options(MessageLoop::TYPE_IO, 0)));
@@ -271,10 +267,9 @@ void DiskCacheTestWithCache::InitDefaultCacheViaCreator() {
   ASSERT_TRUE(cache_thread_.message_loop() != NULL);
 
   net::TestCompletionCallback cb;
-  disk_cache::CacheCreator* creator = new disk_cache::CacheCreator(
-      cache_path_, true, 0, net::DISK_CACHE, disk_cache::kNoRandom,
-      cache_thread_.message_loop_proxy(), NULL, &cache_, cb.callback());
-  int rv = creator->Run();
+  int rv = disk_cache::CreateCacheBackend(net::DISK_CACHE, cache_path_, 0, true,
+                                          cache_thread_.message_loop_proxy(),
+                                          NULL, &cache_, cb.callback());
   ASSERT_EQ(net::OK, cb.GetResult(rv));
 }