Add UMA stats for SharedWorker in SharedWorkerHost.

content/browser/shared_worker/shared_worker_host.cc

 // Copyright 2014 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 "content/browser/shared_worker/shared_worker_host.h"
 
+#include "base/metrics/histogram.h"
 #include "content/browser/frame_host/render_frame_host_delegate.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/message_port_service.h"
 #include "content/browser/shared_worker/shared_worker_instance.h"
 #include "content/browser/shared_worker/shared_worker_message_filter.h"
 #include "content/common/view_messages.h"
 #include "content/common/worker_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/content_client.h"
 
 namespace content {
 namespace {
 
 // Notifies RenderViewHost that one or more worker objects crashed.
 void WorkerCrashCallback(int render_process_unique_id, int render_frame_id) {
   RenderFrameHostImpl* host =
       RenderFrameHostImpl::FromID(render_process_unique_id, render_frame_id);
   if (host)
     host->delegate()->WorkerCrashed(host);
 }
 
 }  // namespace
 
 SharedWorkerHost::SharedWorkerHost(SharedWorkerInstance* instance)
     : instance_(instance),
       container_render_filter_(NULL),
-      worker_route_id_(MSG_ROUTING_NONE) {
+      worker_route_id_(MSG_ROUTING_NONE),
+      creation_time_(base::TimeTicks::Now()) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 }
 
 SharedWorkerHost::~SharedWorkerHost() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  UMA_HISTOGRAM_LONG_TIMES("SharedWorker.TimeToDeleted",
+                           base::TimeTicks::Now() - creation_time_);
   // If we crashed, tell the RenderViewHosts.
   if (instance_ && !instance_->load_failed()) {
     const WorkerDocumentSet::DocumentInfoSet& parents =
         instance_->worker_document_set()->documents();
     for (WorkerDocumentSet::DocumentInfoSet::const_iterator parent_iter =
              parents.begin();
          parent_iter != parents.end();
          ++parent_iter) {
       BrowserThread::PostTask(BrowserThread::UI,
                               FROM_HERE,
@@ skipping 80 matching lines @@
 }
 
 void SharedWorkerHost::WorkerContextDestroyed() {
   if (!instance_)
     return;
   instance_.reset();
 }
 
 void SharedWorkerHost::WorkerScriptLoaded() {
   // TODO(horo): implement this.
+  UMA_HISTOGRAM_TIMES("SharedWorker.TimeToScriptLoaded",
+                      base::TimeTicks::Now() - creation_time_);
 }
 
 void SharedWorkerHost::WorkerScriptLoadFailed() {
+  UMA_HISTOGRAM_TIMES("SharedWorker.TimeToScriptLoadFailed",
+                      base::TimeTicks::Now() - creation_time_);
   if (!instance_)
     return;
   instance_->set_load_failed(true);
   for (SharedWorkerInstance::FilterList::const_iterator i =
            instance_->filters().begin();
        i != instance_->filters().end(); ++i) {
     i->filter()->Send(new ViewMsg_WorkerScriptLoadFailed(i->route_id()));
   }
 }
 
@@ skipping 95 matching lines @@
            documents.begin();
        doc != documents.end();
        ++doc) {
     result.push_back(
         std::make_pair(doc->render_process_id(), doc->render_frame_id()));
   }
   return result;
 }
 
 }  // namespace content