Move PerformanceBase to TaskRunnerTimer.

third_party/WebKit/Source/core/timing/WorkerPerformance.cpp

Index: third_party/WebKit/Source/core/timing/WorkerPerformance.cpp
diff --git a/third_party/WebKit/Source/core/timing/WorkerPerformance.cpp b/third_party/WebKit/Source/core/timing/WorkerPerformance.cpp
index d729e7eb95a41a1b77f9b644807907950dc827af..6634b1a34c5f34c8e1a786502ccd6fc402969e58 100644
--- a/third_party/WebKit/Source/core/timing/WorkerPerformance.cpp
+++ b/third_party/WebKit/Source/core/timing/WorkerPerformance.cpp
@@ -33,12 +33,18 @@
 #include "core/timing/MemoryInfo.h"
 #include "core/workers/DedicatedWorkerGlobalScope.h"
 #include "core/workers/WorkerGlobalScope.h"
+#include "public/platform/Platform.h"
+#include "public/platform/WebScheduler.h"
+#include "public/platform/WebThread.h"
 #include "wtf/CurrentTime.h"
 
 namespace blink {
 
 WorkerPerformance::WorkerPerformance(WorkerGlobalScope* context)
-    : PerformanceBase(context->timeOrigin()), m_executionContext(context) {}
+    : PerformanceBase(
+          context->timeOrigin(),
+          Platform::current()->currentThread()->scheduler()->timerTaskRunner()),

[haraken, 2017/01/20 02:30:25]

Yeah, we don't yet have a good concept of TaskTypes in worker threads. So
directly using the timer task runner makes sense.

+      m_executionContext(context) {}
 
 DEFINE_TRACE(WorkerPerformance) {
   visitor->trace(m_executionContext);