Move base to DEPS

base/mac/sdk_forward_declarations.mm

-// Copyright 2014 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 "base/mac/sdk_forward_declarations.h"
-
-#if !defined(MAC_OS_X_VERSION_10_7) || \
-    MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_7
-NSString* const NSWindowWillEnterFullScreenNotification =
-    @"NSWindowWillEnterFullScreenNotification";
-
-NSString* const NSWindowWillExitFullScreenNotification =
-    @"NSWindowWillExitFullScreenNotification";
-
-NSString* const NSWindowDidEnterFullScreenNotification =
-    @"NSWindowDidEnterFullScreenNotification";
-
-NSString* const NSWindowDidExitFullScreenNotification =
-    @"NSWindowDidExitFullScreenNotification";
-
-NSString* const NSWindowDidChangeBackingPropertiesNotification =
-    @"NSWindowDidChangeBackingPropertiesNotification";
-
-NSString* const CBAdvertisementDataServiceDataKey = @"kCBAdvDataServiceData";
-
-NSString* const NSPreferredScrollerStyleDidChangeNotification =
-    @"NSPreferredScrollerStyleDidChangeNotification";
-#endif  // MAC_OS_X_VERSION_10_7
-
-#if !defined(MAC_OS_X_VERSION_10_9) || \
-    MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_9
-NSString* const NSWindowDidChangeOcclusionStateNotification =
-    @"NSWindowDidChangeOcclusionStateNotification";
-
-NSString* const CBAdvertisementDataIsConnectable = @"kCBAdvDataIsConnectable";
-#endif  // MAC_OS_X_VERSION_10_9
-
-#if !defined(MAC_OS_X_VERSION_10_10) || \
-    MAC_OS_X_VERSION_MIN_REQUIRED < MAC_OS_X_VERSION_10_10
-NSString* const NSUserActivityTypeBrowsingWeb =
-    @"NSUserActivityTypeBrowsingWeb";
-
-NSString* const NSAppearanceNameVibrantDark = @"NSAppearanceNameVibrantDark";
-#endif  // MAC_OS_X_VERSION_10_10