Adding a request counter to the snippets fetcher.

components/ntp_snippets/request_throttler.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_REQUEST_THROTTLER_H_
 #define COMPONENTS_NTP_SNIPPETS_REQUEST_THROTTLER_H_
 
 #include <string>
 
 #include "base/macros.h"
@@ skipping 28 matching lines @@
 //  2) define a new RequestThrottlerTypes histogram suffix in histogram.xml
 //     (with the same string value as in 1a)).
 class RequestThrottler {
  public:
   // Enumeration listing all current applications of the request counter.
   enum class RequestType {
     CONTENT_SUGGESTION_FETCHER
   };
 
   RequestThrottler(PrefService* pref_service,
-                 RequestType type,
-                 int default_quota);
+                   RequestType type,
+                   int default_quota);
 
   // Registers profile prefs for all RequestTypes. Called from browser_prefs.cc.
   static void RegisterProfilePrefs(PrefRegistrySimple* registry);
 
   // Returns whether quota is available for another request and reports this
   // information to UMA. Forced requests always return true -- should be only
   // used for requests initiated by the user (if it is safe to assume that all
   // users cannot generate an amount of requests we cannot handle).
   bool DemandQuotaForRequest(bool force_request);
 
@@ skipping 18 matching lines @@
   // The histograms for reporting the requests of the given |type_|.
   base::HistogramBase* histogram_request_status_;
   base::HistogramBase* histogram_per_day_;
 
   DISALLOW_COPY_AND_ASSIGN(RequestThrottler);
 };
 
 }  // namespace ntp_snippets
 
 #endif  // COMPONENTS_NTP_SNIPPETS_REQUEST_THROTTLER_H_