[Offline Pages] Adds UMA for number of started attempts and for network connection when Unsupported…

components/offline_pages/background/offliner_policy.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_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_
 #define COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_
 
 namespace {
-const int kMaxStartedTries = 5;
+const int kMaxStartedTries = 4;
 const int kMaxCompletedTries = 1;
 const int kBackgroundProcessingTimeBudgetSeconds = 170;
 const int kSinglePageTimeLimitSeconds = 120;
 const int kMinimumBatteryPercentageForNonUserRequestOfflining = 50;
 const int kRequestExpirationTimeInSeconds = 60 * 60 * 24 * 7;
 }  // namespace
 
 namespace offline_pages {
 
 // Policy for the Background Offlining system.  Some policy will belong to the
@@ skipping 85 matching lines @@
  private:
   bool prefer_untried_requests_;
   bool prefer_earlier_requests_;
   bool retry_count_is_more_important_than_recency_;
   int max_started_tries_;
   int max_completed_tries_;
 };
 }
 
 #endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_OFFLINER_POLICY_H_