RemoteSuggestionsFetcher: Remove ChromeReader integration

components/ntp_snippets/remote/json_request.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_REMOTE_JSON_REQUEST_H_
 #define COMPONENTS_NTP_SNIPPETS_REMOTE_JSON_REQUEST_H_
 
 #include <memory>
 #include <string>
 #include <utility>
 
 #include "base/callback.h"
 #include "base/memory/weak_ptr.h"
 #include "base/optional.h"
 #include "base/time/time.h"
 #include "components/ntp_snippets/remote/request_params.h"
 #include "components/ntp_snippets/status.h"
 #include "components/translate/core/browser/language_model.h"
 #include "google_apis/gaia/oauth2_token_service.h"
 #include "net/http/http_request_headers.h"
 
 namespace base {
 class Value;
 class Clock;
 }  // namespace base
 
-class FetchAPI;
-
 namespace ntp_snippets {
 class UserClassifier;
 
 namespace internal {
 
 // Enumeration listing all possible outcomes for fetch attempts. Used for UMA
 // histograms, so do not change existing values. Insert new values at the end,
 // and update the histogram definition.
 enum class FetchResult {
   SUCCESS = 0,
   // DEPRECATED_EMPTY_HOSTS = 1,
   URL_REQUEST_STATUS_ERROR = 2,
   HTTP_ERROR = 3,
   JSON_PARSE_ERROR = 4,
   INVALID_SNIPPET_CONTENT_ERROR = 5,
   OAUTH_TOKEN_ERROR = 6,
   // DEPRECATED_INTERACTIVE_QUOTA_ERROR = 7,
   // DEPRECATED_NON_INTERACTIVE_QUOTA_ERROR = 8,
   MISSING_API_KEY = 9,
   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 {
  public:
   // A client can expect error_details only, if there was any error during the
   // fetching or parsing. In successful cases, it will be an empty string.
   using CompletedCallback =
       base::OnceCallback<void(std::unique_ptr<base::Value> result,
                               FetchResult result_code,
                               const std::string& error_details)>;
 
   // Builds authenticated and non-authenticated JsonRequests.
   class Builder {
    public:
     Builder();
     Builder(Builder&&);
     ~Builder();
 
     // Builds a Request object that contains all data to fetch new snippets.
     std::unique_ptr<JsonRequest> Build() const;
 
     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);
     Builder& SetParams(const RequestParams& params);
     Builder& SetParseJsonCallback(ParseJSONCallback callback);
     // The clock borrowed from the fetcher will be injected into the
     // request. It will be used at build time and after the fetch returned.
     // It has to be alive until the request is destroyed.
     Builder& SetClock(base::Clock* clock);
     Builder& SetUrl(const GURL& url);
@@ skipping 20 matching lines @@
         const std::string& headers,
         const std::string& body) const;
 
     void PrepareLanguages(
         translate::LanguageModel::LanguageInfo* ui_language,
         translate::LanguageModel::LanguageInfo* other_top_language) const;
 
     // 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_;
     scoped_refptr<net::URLRequestContextGetter> url_request_context_getter_;
 
     // Optional properties.
     std::string obfuscated_gaia_id_;
     std::string user_class_;
     const translate::LanguageModel* language_model_;
 
@@ skipping 46 matching lines @@
   base::WeakPtrFactory<JsonRequest> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(JsonRequest);
 };
 
 }  // namespace internal
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_REMOTE_JSON_REQUEST_H_