Use per-frame task runner in XHR

third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp

Index: third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp
diff --git a/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp b/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp
index 9bfb0444231bbee6dabf724534e563861e2038a0..102b7c5db5c4d445627c61c85600b57be5a7fe32 100644
--- a/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp
+++ b/third_party/WebKit/Source/core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.cpp
@@ -27,6 +27,7 @@
 #include "core/xmlhttprequest/XMLHttpRequestProgressEventThrottle.h"
 
 #include "core/EventTypeNames.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/events/ProgressEvent.h"
 #include "core/inspector/InspectorInstrumentation.h"
 #include "core/inspector/InspectorTraceEvents.h"
@@ -74,7 +75,7 @@ Event* XMLHttpRequestProgressEventThrottle::DeferredEvent::take()
 }
 
 XMLHttpRequestProgressEventThrottle::XMLHttpRequestProgressEventThrottle(XMLHttpRequest* target)
-    : TimerBase(Platform::current()->currentThread()->scheduler()->timerTaskRunner())
+    : TimerBase(TaskRunnerHelper::get(TaskType::Networking, target->getExecutionContext()))
     , m_target(target)
     , m_hasDispatchedProgressProgressEvent(false)
 {