Move directory creation functions to base namespace.

net/disk_cache/cache_util_unittest.cc

Index: net/disk_cache/cache_util_unittest.cc
diff --git a/net/disk_cache/cache_util_unittest.cc b/net/disk_cache/cache_util_unittest.cc
index d2e76054f7f643f613f53973a629a162b53cf803..b86290f757f8d1be4d61d8628498e02c7a0c9b3e 100644
--- a/net/disk_cache/cache_util_unittest.cc
+++ b/net/disk_cache/cache_util_unittest.cc
@@ -20,14 +20,14 @@ class CacheUtilTest : public PlatformTest {
     file2_ = base::FilePath(cache_dir_.Append(FILE_PATH_LITERAL(".file02")));
     dir1_ = base::FilePath(cache_dir_.Append(FILE_PATH_LITERAL("dir01")));
     file3_ = base::FilePath(dir1_.Append(FILE_PATH_LITERAL("file03")));
-    ASSERT_TRUE(file_util::CreateDirectory(cache_dir_));
+    ASSERT_TRUE(base::CreateDirectory(cache_dir_));
     FILE *fp = file_util::OpenFile(file1_, "w");
     ASSERT_TRUE(fp != NULL);
     file_util::CloseFile(fp);
     fp = file_util::OpenFile(file2_, "w");
     ASSERT_TRUE(fp != NULL);
     file_util::CloseFile(fp);
-    ASSERT_TRUE(file_util::CreateDirectory(dir1_));
+    ASSERT_TRUE(base::CreateDirectory(dir1_));
     fp = file_util::OpenFile(file3_, "w");
     ASSERT_TRUE(fp != NULL);
     file_util::CloseFile(fp);