Introduce ServiceWorker.EventDispatchingDelay UMA

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/containers/scoped_ptr_hash_map.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/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_metrics.h"
 #include "content/browser/service_worker/service_worker_script_cache_map.h"
 #include "content/common/content_export.h"
 #include "content/common/service_worker/service_worker_status_code.h"
 #include "content/common/service_worker/service_worker_types.h"
 #include "ipc/ipc_message.h"
 #include "mojo/public/cpp/bindings/interface_ptr.h"
@@ skipping 193 matching lines @@
                                     const StatusCallback& error_callback,
                                     const base::TimeDelta& timeout,
                                     TimeoutBehavior timeout_behavior);
 
   // Informs ServiceWorkerVersion that an event has finished being dispatched.
   // Returns false if no pending requests with the provided id exist, for
   // example if the request has already timed out.
   // Pass the result of the event to |was_handled|, which is used to record
   // statistics based on the event status.
   // TODO(mek): Use something other than a bool for event status.
-  bool FinishRequest(int request_id, bool was_handled);
+  bool FinishRequest(int request_id,
+                     bool was_handled,
+                     base::Time dispatch_event_time);
 
   // Connects to a specific mojo service exposed by the (running) service
   // worker. If a connection to a service for the same Interface already exists
   // this will return that existing connection. The |request_id| must be a value
   // previously returned by StartRequest. If the connection to the service
   // fails or closes before the request finished, the error callback associated
   // with |request_id| is called.
   // Only call GetMojoServiceForRequest once for a specific |request_id|.
   template <typename Interface>
   base::WeakPtr<Interface> GetMojoServiceForRequest(int request_id);
@@ skipping 165 matching lines @@
     ~RequestInfo();
     bool operator>(const RequestInfo& other) const;
     int id;
     ServiceWorkerMetrics::EventType event_type;
     base::TimeTicks expiration;
     TimeoutBehavior timeout_behavior;
   };
 
   struct PendingRequest {
     PendingRequest(const StatusCallback& error_callback,
-                   const base::TimeTicks& time,
+                   base::Time time,
+                   const base::TimeTicks& time_ticks,
                    ServiceWorkerMetrics::EventType event_type);
     ~PendingRequest();
 
     // ------------------------------------------------------------------------
     // For all requests. Set by StartRequest.
     // ------------------------------------------------------------------------
     StatusCallback error_callback;
-    base::TimeTicks start_time;
+    base::Time start_time;
+    base::TimeTicks start_time_ticks;
     ServiceWorkerMetrics::EventType event_type;
 
     // -------------------------------------------------------------------------
     // For Mojo requests.
     // -------------------------------------------------------------------------
     // Name of the mojo service this request is associated with. Used to call
     // the callback when a connection closes with outstanding requests. Compared
     // as pointer, so should only contain static strings. Typically this would
     // be Interface::Name_ for some mojo interface.
     const char* mojo_service = nullptr;
@@ skipping 118 matching lines @@
   // Message handlers.
 
   // This corresponds to the spec's get(id) steps.
   void OnGetClient(int request_id, const std::string& client_uuid);
 
   // This corresponds to the spec's matchAll(options) steps.
   void OnGetClients(int request_id,
                     const ServiceWorkerClientQueryOptions& options);
 
   void OnSimpleEventResponse(int request_id,
-                             blink::WebServiceWorkerEventResult result);
+                             blink::WebServiceWorkerEventResult result,
+                             base::Time dispatch_event_time);
   void OnOpenWindow(int request_id, GURL url);
   void OnOpenWindowFinished(int request_id,
                             ServiceWorkerStatusCode status,
                             const ServiceWorkerClientInfo& client_info);
 
   void OnSetCachedMetadata(const GURL& url, const std::vector<char>& data);
   void OnSetCachedMetadataFinished(int64_t callback_id, int result);
   void OnClearCachedMetadata(const GURL& url);
   void OnClearCachedMetadataFinished(int64_t callback_id, int result);
 
@@ skipping 244 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_