Move temp file functions to base namespace.

chrome/browser/shell_integration_win_unittest.cc

Index: chrome/browser/shell_integration_win_unittest.cc
diff --git a/chrome/browser/shell_integration_win_unittest.cc b/chrome/browser/shell_integration_win_unittest.cc
index fa91c1c6b4044cb68534c1aee267d9cdbf6c3c8d..2f0081dcb121dbf2288bd9ae5af3b0ae0b3e8199 100644
--- a/chrome/browser/shell_integration_win_unittest.cc
+++ b/chrome/browser/shell_integration_win_unittest.cc
@@ -36,10 +36,10 @@ class ShellIntegrationWinMigrateShortcutTest : public testing::Test {
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
 
     // A path to a random target.
-    file_util::CreateTemporaryFileInDir(temp_dir_.path(), &other_target_);
+    base::CreateTemporaryFileInDir(temp_dir_.path(), &other_target_);
 
     // This doesn't need to actually have a base name of "chrome.exe".
-    file_util::CreateTemporaryFileInDir(temp_dir_.path(), &chrome_exe_);
+    base::CreateTemporaryFileInDir(temp_dir_.path(), &chrome_exe_);
 
     chrome_app_id_ =
         ShellUtil::GetBrowserModelId(BrowserDistribution::GetDistribution(),