Cleanup more test code.

chrome/browser/sessions/session_service_test_helper.cc

-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/sessions/session_service_test_helper.h"
 
 #include "base/scoped_vector.h"
 #include "chrome/browser/sessions/session_backend.h"
 #include "chrome/browser/sessions/session_id.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_types.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::Time;
 
+SessionServiceTestHelper::SessionServiceTestHelper() {}
+
+SessionServiceTestHelper::SessionServiceTestHelper(SessionService* service)
+    : service_(service) {}
+
+SessionServiceTestHelper::~SessionServiceTestHelper() {}
+
 void SessionServiceTestHelper::RestoreSessionFromCommands(
     const std::vector<SessionCommand*>& commands,
     std::vector<SessionWindow*>* valid_windows) {
   service()->RestoreSessionFromCommands(commands, valid_windows);
 }
 
 void SessionServiceTestHelper::PrepareTabInWindow(const SessionID& window_id,
                                                   const SessionID& tab_id,
                                                   int visual_index,
                                                   bool select) {
@@ skipping 55 matching lines @@
     const std::vector<SessionWindow*>& windows,
     size_t nav_count) {
   ASSERT_EQ(1U, windows.size());
   EXPECT_EQ(1U, windows[0]->tabs.size());
   EXPECT_EQ(nav_count, windows[0]->tabs[0]->navigations.size());
 }
 
 SessionBackend* SessionServiceTestHelper::backend() {
   return service_->backend();
 }