[NTP] Remove the ScrollView version of the NTP.

components/ntp_snippets/features.h

 // Copyright 2016 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_NTP_SNIPPETS_FEATURES_H_
 #define COMPONENTS_NTP_SNIPPETS_FEATURES_H_
 
 #include <memory>
 #include <string>
 
@@ skipping 17 matching lines @@
 // Feature to allow the 'save to offline' option to appear in the snippets
 // context menu.
 extern const base::Feature kSaveToOfflineFeature;
 
 // Feature to allow offline badges to appear on snippets.
 extern const base::Feature kOfflineBadgeFeature;
 
 // Feature to allow dismissing sections.
 extern const base::Feature kSectionDismissalFeature;
 
-// Global toggle for the whole content suggestions feature. If this is set to
-// false, all the per-provider features are ignored.
-extern const base::Feature kContentSuggestionsFeature;
+// Feature to allow specification of content suggestions source.
+// TODO(peconn): Figure out how to remove this, it is useful to specify the
+// source, but you shouldn't be able to disable it.
+extern const base::Feature kContentSuggestionsSource;
 
 // Feature to allow UI as specified here: https://crbug.com/660837.
 extern const base::Feature kIncreasedVisibility;
 
 // Feature to enable the Fetch More action
 extern const base::Feature kFetchMoreFeature;
 
 // Feature to prefer AMP URLs over regular URLs when available.
 extern const base::Feature kPreferAmpUrlsFeature;
 
@@ skipping 15 matching lines @@
 CategoryRankerChoice GetSelectedCategoryRanker();
 
 // Builds a CategoryRanker according to kCategoryRanker feature.
 std::unique_ptr<CategoryRanker> BuildSelectedCategoryRanker(
     PrefService* pref_service,
     std::unique_ptr<base::Clock> clock);
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_FEATURES_H_