Move file_util::Delete to the base namespace

content/browser/web_contents/navigation_controller_impl_unittest.cc

Index: content/browser/web_contents/navigation_controller_impl_unittest.cc
diff --git a/content/browser/web_contents/navigation_controller_impl_unittest.cc b/content/browser/web_contents/navigation_controller_impl_unittest.cc
index be9d6ad06d504a5d7721baaa922805f86029d48d..6fb30624b2ea2546f21081ddf5303da15ecb9ce0 100644
--- a/content/browser/web_contents/navigation_controller_impl_unittest.cc
+++ b/content/browser/web_contents/navigation_controller_impl_unittest.cc
@@ -3767,7 +3767,7 @@ class NavigationControllerHistoryTest : public NavigationControllerTest {
     // Do normal cleanup before deleting the profile directory below.
     NavigationControllerTest::TearDown();
 
-    ASSERT_TRUE(file_util::Delete(test_dir_, true));
+    ASSERT_TRUE(base::Delete(test_dir_, true));
     ASSERT_FALSE(file_util::PathExists(test_dir_));
   }