[Offline Pages] Create a event/activity logger

components/offline_pages/background/request_coordinator.cc

 // 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.
 
 #include "components/offline_pages/background/request_coordinator.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 133 matching lines @@
                           base::Bind(&RequestCoordinator::UpdateRequestCallback,
                                      weak_ptr_factory_.GetWeakPtr()));
 
     // TODO(petewil): Check time budget. Return to the scheduler if we are out.
 
     // Start another request if we have time.
     TryNextRequest();
   }
 }
 
+void RequestCoordinator::SetIsLogging(bool should_log) {

[Pete Williamson, 2016/06/24 00:38:31]

I don't see any calls to record logs (for example RecordSavePageRequestUpdated).
 It might be good to add a sample, so I can have a working example to start from
to add more where we want them.

[chili, 2016/06/24 02:45:50]

You don't see any logs because I don't actually know where would be the best
place to record them.  I tentatively put something in the OfflinerDoneCallback
for now. Let me know if you think there's a better place for it.

+  event_logger_.SetIsLogging(should_log);
+}
+
+void RequestCoordinator::GetLogs(std::vector<std::string> logs) {
+  event_logger_.GetLogs(logs);
+}
+
 }  // namespace offline_pages