Componentize enhanced_bookmark_features.{h,cc}.

components/enhanced_bookmarks/enhanced_bookmark_features.h

+// Copyright 2015 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.
+
+#ifndef COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_FEATURES_H_
+#define COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_FEATURES_H_
+
+#include "build/build_config.h"
+
+#if defined(OS_IOS) || defined(OS_ANDROID)
+
+namespace enhanced_bookmarks {
+
+// Returns true if enhanced bookmarks is enabled.
+bool IsEnhancedBookmarksEnabled();
+
+}  // namespace enhanced_bookmarks
+
+#endif
+
+#endif  // COMPONENTS_ENHANCED_BOOKMARKS_ENHANCED_BOOKMARK_FEATURES_H_