Support optimistic Create and Write operations on the SimpleCache.

net/disk_cache/backend_unittest.cc

Index: net/disk_cache/backend_unittest.cc
diff --git a/net/disk_cache/backend_unittest.cc b/net/disk_cache/backend_unittest.cc
index 70e24ac5dade8bb32638d85a10aa099daccceb02..3908f409e2fb647660cb84bf7228e46d4d8e2c68 100644
--- a/net/disk_cache/backend_unittest.cc
+++ b/net/disk_cache/backend_unittest.cc
@@ -2900,6 +2900,13 @@ TEST_F(DiskCacheBackendTest, SimpleCacheOpenMissingFile) {
   entry->Close();
   entry = NULL;
 
+  // To make sure the file creation completed we need to call open again so that
+  // we block until it actually created the files.
+  ASSERT_EQ(net::OK, OpenEntry(key, &entry));
+  ASSERT_TRUE(entry != NULL);
+  entry->Close();
+  entry = NULL;
+
   // Delete one of the files in the entry.
   base::FilePath to_delete_file = cache_path_.AppendASCII(
       disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, 0));
@@ -2931,6 +2938,13 @@ TEST_F(DiskCacheBackendTest, SimpleCacheOpenBadFile) {
   entry->Close();
   entry = NULL;
 
+  // To make sure the file creation completed we need to call open again so that
+  // we block until it actually created the files.
+  ASSERT_EQ(net::OK, OpenEntry(key, &entry));
+  ASSERT_NE(null, entry);
+  entry->Close();
+  entry = NULL;
+
   // Write an invalid header on stream 1.
   base::FilePath entry_file1_path = cache_path_.AppendASCII(
       disk_cache::simple_util::GetFilenameFromKeyAndIndex(key, 1));