Chrome Performance Monitor: Metric API Functions.

chrome/browser/performance_monitor/performance_monitor_util.h

 // 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.
 
 #ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_UTIL_H_
 #define CHROME_BROWSER_PERFORMANCE_MONITOR_UTIL_H_
 
 #include "base/callback.h"
 #include "base/time.h"
 #include "chrome/browser/performance_monitor/event.h"
 #include "chrome/browser/performance_monitor/metric_info.h"
 #include "chrome/common/extensions/extension_constants.h"
 
 namespace performance_monitor {
 namespace util {
 
 // Metric data can be either dense or sporadic, so AggregateMetric() normalizes
 // the metric data in time. |metric_infos| must be sorted in increasing time.
 // Put concisely, AggregateMetric() does sample rate conversion from irregular
 // metric data points to a sample period of |resolution| beginning at |start|.
 // Each sampling window starts and ends at an integer multiple away from
 // |start| and data points are omitted if there are no points to resample.
 std::vector<MetricInfo> AggregateMetric(
     const std::vector<MetricInfo>& metric_infos,
     const base::Time& start,
     const base::TimeDelta& resolution);
 
-// Post a task to the database using the kDatabaseSequenceToken and reply; this
-// is useful in the absence of a PostBlockingPoolSequencedTaskAndReply method.
-bool PostTaskToDatabaseAndReply(const base::Closure& request,
-                                const base::Closure& reply);
+// Posts |request| to the performance monitor database's sequenced thread. On
+// completion |reply| is posted to the thread that called
+// PostTaskToDatabaseThreadAndReply.
+bool PostTaskToDatabaseThreadAndReply(const base::Closure& request,
+                                      const base::Closure& reply);
 
 // These are a collection of methods designed to create an event to store the
 // pertinent information, given all the fields. Please use these methods to
 // create any PerformanceMonitor events, as this will ensure strong-typing
 // guards that performance_monitor::Event() will not.
 scoped_ptr<Event> CreateExtensionInstallEvent(
     const base::Time& time,
     const std::string& id,
     const std::string& name,
     const std::string& url,
@@ skipping 51 matching lines @@
 
 scoped_ptr<Event> CreateChromeUpdateEvent(
     const base::Time& time,
     const std::string& previous_version,
     const std::string& current_version);
 
 }  // namespace util
 }  // namespace performance_monitor
 
 #endif  // CHROME_BROWSER_PERFORMANCE_MONITOR_UTIL_H__