Move file_util::Delete to the base namespace

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 9c2583a69934714157f8ea5de2ec7fadfc66f0a3..65973409c534976ee8baa4da94e2e8f61ad921e8 100644
--- a/net/disk_cache/backend_unittest.cc
+++ b/net/disk_cache/backend_unittest.cc
@@ -270,7 +270,7 @@ TEST_F(DiskCacheTest, CreateBackend) {
 TEST_F(DiskCacheBackendTest, CreateBackend_MissingFile) {
   ASSERT_TRUE(CopyTestCache("bad_entry"));
   base::FilePath filename = cache_path_.AppendASCII("data_1");
-  file_util::Delete(filename, false);
+  base::Delete(filename, false);
   base::Thread cache_thread("CacheThread");
   ASSERT_TRUE(cache_thread.StartWithOptions(
       base::Thread::Options(base::MessageLoop::TYPE_IO, 0)));
@@ -2782,7 +2782,7 @@ TEST_F(DiskCacheBackendTest, FileSharing) {
   EXPECT_TRUE(file2.IsValid());
 #endif
 
-  EXPECT_TRUE(file_util::Delete(name, false));
+  EXPECT_TRUE(base::Delete(name, false));
 
   // We should be able to use the file.
   const int kSize = 200;