Add trace to the caller of QuotaManager::GetAvailableSpace

content/browser/appcache/appcache_storage_impl.cc

 // Copyright (c) 2012 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/appcache/appcache_storage_impl.h"
 
 #include <algorithm>
 #include <functional>
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_util.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/single_thread_task_runner.h"
 #include "base/stl_util.h"
 #include "base/strings/string_util.h"
 #include "base/thread_task_runner_handle.h"
+#include "base/trace_event/trace_event.h"
 #include "content/browser/appcache/appcache.h"
 #include "content/browser/appcache/appcache_database.h"
 #include "content/browser/appcache/appcache_entry.h"
 #include "content/browser/appcache/appcache_group.h"
 #include "content/browser/appcache/appcache_histograms.h"
 #include "content/browser/appcache/appcache_quota_client.h"
 #include "content/browser/appcache/appcache_response.h"
 #include "content/browser/appcache/appcache_service_impl.h"
 #include "net/base/cache_type.h"
 #include "net/base/net_errors.h"
@@ skipping 625 matching lines @@
 
   if (!quota_manager) {
     if (storage_->service()->special_storage_policy() &&
         storage_->service()->special_storage_policy()->IsStorageUnlimited(
             group_record_.origin))
       space_available_ = kint64max;
     Schedule();
     return;
   }
 
+  // crbug.com/349708
+  TRACE_EVENT0(
+      "io",
+      "AppCacheStorageImpl::StoreGroupAndCacheTask::GetQuotaThenSchedule");
+
   // We have to ask the quota manager for the value.
   storage_->pending_quota_queries_.insert(this);
   quota_manager->GetUsageAndQuota(
       group_record_.origin,
       storage::kStorageTypeTemporary,
       base::Bind(&StoreGroupAndCacheTask::OnQuotaCallback, this));
 }
 
 void AppCacheStorageImpl::StoreGroupAndCacheTask::OnQuotaCallback(
     storage::QuotaStatusCode status,
@@ skipping 1296 matching lines @@
 
 void AppCacheStorageImpl::OnLazyCommitTimer() {
   lazy_commit_timer_.Stop();
   if (is_disabled())
     return;
   scoped_refptr<DatabaseTask> task(new CommitLastAccessTimesTask(this));
   task->Schedule();
 }
 
 }  // namespace content