Move directory creation functions to base namespace.

net/proxy/proxy_config_service_linux_unittest.cc

Index: net/proxy/proxy_config_service_linux_unittest.cc
diff --git a/net/proxy/proxy_config_service_linux_unittest.cc b/net/proxy/proxy_config_service_linux_unittest.cc
index f3700f61662398b96ea63c2120341124c29a03b4..c3a1aa5b9faa5c951f2a37009ca53c571ec51223 100644
--- a/net/proxy/proxy_config_service_linux_unittest.cc
+++ b/net/proxy/proxy_config_service_linux_unittest.cc
@@ -360,7 +360,7 @@ class ProxyConfigServiceLinuxTest : public PlatformTest {
     kde_home_ = user_home_.Append(FILE_PATH_LITERAL(".kde"));
     base::FilePath path = kde_home_.Append(FILE_PATH_LITERAL("share"));
     path = path.Append(FILE_PATH_LITERAL("config"));
-    file_util::CreateDirectory(path);
+    base::CreateDirectory(path);
     kioslaverc_ = path.Append(FILE_PATH_LITERAL("kioslaverc"));
     // Set up paths but do not create the directory for .kde4.
     kde4_home_ = user_home_.Append(FILE_PATH_LITERAL(".kde4"));
@@ -1548,7 +1548,7 @@ TEST_F(ProxyConfigServiceLinuxTest, KDEHomePicker) {
 
   // Now create .kde4 and put a kioslaverc in the config directory.
   // Note that its timestamp will be at least as new as the .kde one.
-  file_util::CreateDirectory(kde4_config_);
+  base::CreateDirectory(kde4_config_);
   file_util::WriteFile(kioslaverc4_, slaverc4.c_str(), slaverc4.length());
   CHECK(base::PathExists(kioslaverc4_));