Revert of "Speculatively launch Service Workers on mouse/touch events."

content/browser/service_worker/service_worker_version.h

 // Copyright 2013 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 CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 #define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_
 
 #include <stdint.h>
 
 #include <functional>
 #include <map>
 #include <memory>
 #include <queue>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/gtest_prod_util.h"
 #include "base/id_map.h"
 #include "base/macros.h"
 #include "base/memory/ptr_util.h"
 #include "base/memory/ref_counted.h"
 #include "base/observer_list.h"
-#include "base/optional.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/tick_clock.h"
 #include "base/time/time.h"
 #include "base/timer/timer.h"
 #include "content/browser/service_worker/embedded_worker_instance.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_context_request_handler.h"
 #include "content/browser/service_worker/service_worker_metrics.h"
 #include "content/browser/service_worker/service_worker_script_cache_map.h"
 #include "content/common/content_export.h"
@@ skipping 717 matching lines @@
       ServiceWorkerStatusCode status,
       scoped_refptr<ServiceWorkerRegistration> registration);
 
   void OnStoppedInternal(EmbeddedWorkerStatus old_status);
 
   // Called at the beginning of each Dispatch*Event function: records
   // the time elapsed since idle (generally the time since the previous
   // event ended).
   void OnBeginEvent();
 
-  // Resets |start_worker_first_purpose_| and fires and clears all start
-  // callbacks.
+  // Fires and clears all start callbacks.
   void FinishStartWorker(ServiceWorkerStatusCode status);
 
   // Removes any pending external request that has GUID of |request_uuid|.
   void CleanUpExternalRequest(const std::string& request_uuid,
                               ServiceWorkerStatusCode status);
 
   const int64_t version_id_;
   const int64_t registration_id_;
   const GURL script_url_;
   const GURL scope_;
@@ skipping 81 matching lines @@
 
   std::unique_ptr<PingController> ping_controller_;
 
   // Used for recording worker activities (e.g., a ratio of handled events)
   // while this service worker is running (i.e., after it starts up until it
   // stops).
   std::unique_ptr<ServiceWorkerMetrics::ScopedEventRecorder> event_recorder_;
 
   bool stop_when_devtools_detached_ = false;
 
-  // Keeps the first purpose of starting the worker for UMA. Cleared in
-  // FinishStartWorker().
-  base::Optional<ServiceWorkerMetrics::EventType> start_worker_first_purpose_;
-
   // This is the set of features that were used up until installation of this
   // version completed, or used during the lifetime of |this|. The values must
   // be from blink::UseCounter::Feature enum.
   std::set<uint32_t> used_features_;
 
   base::WeakPtrFactory<ServiceWorkerVersion> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ServiceWorkerVersion);
 };
 
@@ skipping 45 matching lines @@
 
   // At this point |this| can have been deleted, so don't do anything other
   // than returning.
 
   return true;
 }
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_VERSION_H_