Add UMA for the content suggestions settings

components/ntp_snippets/content_suggestions_service.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_CONTENT_SUGGESTIONS_SERVICE_H_
 #define COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTIONS_SERVICE_H_
 
 #include <map>
 #include <memory>
 #include <set>
@@ skipping 213 matching lines @@
       Category category,
       const DismissedSuggestionsCallback& callback);
 
   // Only for debugging use through the internals page. Some providers
   // internally store a list of dismissed suggestions to prevent them from
   // reappearing. This function clears all suggestions of the given |category|
   // from such lists, making dismissed suggestions reappear (if the provider
   // supports it).
   void ClearDismissedSuggestionsForDebugging(Category category);
 
-  // Enables or disables the remote suggestions service.
-  void SetRemoteSuggestionsServiceEnabled(bool enabled);
+  // Enables or disables the remote suggestions provider.
+  void SetRemoteSuggestionsEnabled(bool enabled);
 
-  // Returns true if the remote suggestions service is enabled.
-  bool IsRemoteSuggestionsServiceEnabled() const;
+  // Returns true if the remote suggestions provider is enabled.
+  bool AreRemoteSuggestionsEnabled() const;
 
-  // Returns true if the remote service is managed by an adminstrator's policy.
-  bool IsRemoteSuggestionsServiceManaged() const;
+  // Returns true if the remote provider is managed by an adminstrator's policy.
+  bool AreRemoteSuggestionsManaged() const;
 
-  // Returns true if the remote service is managed by the guardian/parent of a
+  // Returns true if the remote provider is managed by the guardian/parent of a
   // child account.
-  bool IsRemoteSuggestionsServiceManagedByCustodian() const;
+  bool AreRemoteSuggestionsManagedByCustodian() const;
 
   // The reference to the RemoteSuggestionsProvider provider should
   // only be set by the factory and only used for debugging.
   // TODO(jkrcal) The way we deal with the circular dependency feels wrong.
   // Consider swapping the dependencies: first constructing all providers, then
   // constructing the service (passing the remote provider as arg), finally
   // registering the service as an observer of all providers?
   // TODO(jkrcal) Move the getter into the scheduler interface (the setter is
   // then not needed any more). crbug.com/695447
   void set_remote_suggestions_provider(
@@ skipping 152 matching lines @@
 
   // Provides order for categories.
   std::unique_ptr<CategoryRanker> category_ranker_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentSuggestionsService);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_CONTENT_SUGGESTIONS_SERVICE_H_