Move PerformanceBase to TaskRunnerTimer.

third_party/WebKit/Source/core/dom/TaskRunnerHelper.h

 // Copyright 2016 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 TaskRunnerHelper_h
 #define TaskRunnerHelper_h
 
 #include "core/CoreExport.h"
 #include "wtf/Allocator.h"
 #include "wtf/HashTraits.h"
@@ skipping 77 matching lines @@
   DatabaseAccess,
 
   // https://w3c.github.io/presentation-api/#common-idioms
   // This task source is used for all tasks in the Presentation API spec.
   Presentation,
 
   // https://www.w3.org/TR/2016/WD-generic-sensor-20160830/#sensor-task-source
   // This task source is used for all tasks in the Sensor API spec.
   Sensor,
 
+  // https://w3c.github.io/performance-timeline/#performance-timeline
+  PerformanceTimeline,
+
   // Use MiscPlatformAPI for a task that is defined in the spec but is not yet
   // associated with any specific task runner in the spec. MiscPlatformAPI is
   // not encouraged for stable and matured APIs. The spec should define the task
   // runner explicitly.
   // The task runner may be throttled.
   MiscPlatformAPI,
 
   // Other internal tasks that cannot fit any of the above task runners
   // can be posted here, but the usage is not encouraged. The task runner
   // may be throttled.
@@ skipping 29 matching lines @@
  public:
   static RefPtr<WebTaskRunner> get(TaskType, LocalFrame*);
   static RefPtr<WebTaskRunner> get(TaskType, Document*);
   static RefPtr<WebTaskRunner> get(TaskType, ExecutionContext*);
   static RefPtr<WebTaskRunner> get(TaskType, ScriptState*);
 };
 
 }  // namespace blink
 
 #endif