RemoteSuggestionsFetcher: Remove ChromeReader integration

components/ntp_snippets/remote/json_request.h

Index: components/ntp_snippets/remote/json_request.h
diff --git a/components/ntp_snippets/remote/json_request.h b/components/ntp_snippets/remote/json_request.h
index 571268f72ca90322bfcfb253da83a80a250b9635..849df611b6bac4e1ccdd89c378ddedc8499fa4b8 100644
--- a/components/ntp_snippets/remote/json_request.h
+++ b/components/ntp_snippets/remote/json_request.h
@@ -24,8 +24,6 @@ class Value;
 class Clock;
 }  // namespace base
 
-class FetchAPI;
-
 namespace ntp_snippets {
 class UserClassifier;
 
@@ -48,11 +46,6 @@ enum class FetchResult {
   RESULT_MAX = 10
 };
 
-enum FetchAPI {
-  CHROME_READER_API,
-  CHROME_CONTENT_SUGGESTIONS_API,
-};
-
 // A single request to query remote suggestions. On success, the suggestions are
 // returned in parsed JSON form (base::Value).
 class JsonRequest : public net::URLFetcherDelegate {
@@ -77,7 +70,6 @@ class JsonRequest : public net::URLFetcherDelegate {
     Builder& SetAuthentication(const std::string& account_id,
                                const std::string& auth_header);
     Builder& SetCreationTime(base::TimeTicks creation_time);
-    Builder& SetFetchAPI(FetchAPI fetch_api);
     // The language_model borrowed from the fetcher needs to stay alive until
     // the request body is built.
     Builder& SetLanguageModel(const translate::LanguageModel* language_model);
@@ -118,7 +110,6 @@ class JsonRequest : public net::URLFetcherDelegate {
     // Only required, if the request needs to be sent.
     std::string auth_header_;
     base::Clock* clock_;
-    FetchAPI fetch_api_;
     RequestParams params_;
     ParseJSONCallback parse_json_callback_;
     GURL url_;