[ios] Cleanup SessionServiceIOS implementation.

ios/chrome/browser/crash_report/crash_restore_helper_unittest.mm

 // Copyright 2012 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.
 
 #import <Foundation/Foundation.h>
 
 #include <memory>
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
 #include "ios/chrome/browser/crash_report/crash_restore_helper.h"
-#import "ios/chrome/browser/sessions/session_service.h"
+#import "ios/chrome/browser/sessions/session_service_ios.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "testing/platform_test.h"
 #import "third_party/ocmock/OCMock/OCMock.h"
 #include "third_party/ocmock/gtest_support.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
@@ skipping 44 matching lines @@
 
   [helper_ moveAsideSessionInformation];
 
   EXPECT_EQ(NO, [fileManager fileExistsAtPath:sessionPath]);
   EXPECT_EQ(NO, [fileManager fileExistsAtPath:otrSessionPath]);
   EXPECT_EQ(YES, [fileManager fileExistsAtPath:backupPath]);
   [fileManager removeItemAtPath:backupPath error:NULL];
 }
 
 }  // namespace