Replace all usage of FileAutoDeleter with ScopedTempDir.

chrome/browser/sessions/session_service_unittest.cc

Index: chrome/browser/sessions/session_service_unittest.cc
===================================================================
--- chrome/browser/sessions/session_service_unittest.cc	(revision 86426)
+++ chrome/browser/sessions/session_service_unittest.cc	(working copy)
@@ -18,7 +18,6 @@
 #include "chrome/browser/sessions/session_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/test/browser_with_test_window_test.h"
-#include "chrome/test/file_test_utils.h"
 #include "chrome/test/testing_profile.h"
 #include "content/browser/tab_contents/navigation_entry.h"
 #include "content/common/notification_observer.h"
@@ -39,8 +38,7 @@
 
     ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
     path_ = temp_dir_.path().Append(FILE_PATH_LITERAL("SessionTestDirs"));
-    file_util::CreateDirectory(path_);
-    path_deleter_.reset(new FileAutoDeleter(path_));
+    ASSERT_TRUE(file_util::CreateDirectory(path_));
     path_ = path_.AppendASCII(b);
 
     SessionService* session_service = new SessionService(path_);
@@ -60,7 +58,6 @@
 
   virtual void TearDown() {
     helper_.set_service(NULL);
-    path_deleter_.reset();
   }
 
   void UpdateNavigation(const SessionID& window_id,
@@ -136,7 +133,6 @@
   // Path used in testing.
   ScopedTempDir temp_dir_;
   FilePath path_;
-  scoped_ptr<FileAutoDeleter> path_deleter_;
 
   SessionServiceTestHelper helper_;
 };