Move scoped_temp_dir from base to base/files

chrome/browser/user_style_sheet_watcher_unittest.cc

Index: chrome/browser/user_style_sheet_watcher_unittest.cc
diff --git a/chrome/browser/user_style_sheet_watcher_unittest.cc b/chrome/browser/user_style_sheet_watcher_unittest.cc
index b030049fc0812ef8374c52fa542e0a9f241adfad..3b342f127dc3685752aba598f92881601cc66b05 100644
--- a/chrome/browser/user_style_sheet_watcher_unittest.cc
+++ b/chrome/browser/user_style_sheet_watcher_unittest.cc
@@ -7,8 +7,8 @@
 #include "base/base64.h"
 #include "base/basictypes.h"
 #include "base/file_util.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/message_loop.h"
-#include "base/scoped_temp_dir.h"
 #include "base/string_util.h"
 #include "base/threading/thread.h"
 #include "chrome/test/base/testing_browser_process.h"
@@ -18,7 +18,7 @@
 using content::BrowserThread;
 
 TEST(UserStyleSheetWatcherTest, StyleLoad) {
-  ScopedTempDir dir;
+  base::ScopedTempDir dir;
   ASSERT_TRUE(dir.CreateUniqueTempDir());
 
   std::string css_file_contents = "a { color: green; }";