Remove ThreadHeapMode

third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp

Index: third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
diff --git a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
index 23cf3ff269289c3f525af6eed60bf5b304fee5ff..ea797969b1f0878a2ab0db60a535113c567fddf3 100644
--- a/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
+++ b/third_party/WebKit/Source/core/workers/WorkerBackingThread.cpp
@@ -46,16 +46,13 @@ static void removeWorkerIsolate(v8::Isolate* isolate) {
 
 WorkerBackingThread::WorkerBackingThread(const char* name,
                                          bool shouldCallGCOnShutdown)
-    : m_backingThread(
-          WebThreadSupportingGC::create(name, BlinkGC::PerThreadHeapMode)),
+    : m_backingThread(WebThreadSupportingGC::create(name)),
       m_isOwningThread(true),
       m_shouldCallGCOnShutdown(shouldCallGCOnShutdown) {}
 
 WorkerBackingThread::WorkerBackingThread(WebThread* thread,
                                          bool shouldCallGCOnShutdown)
-    : m_backingThread(
-          WebThreadSupportingGC::createForThread(thread,
-                                                 BlinkGC::PerThreadHeapMode)),
+    : m_backingThread(WebThreadSupportingGC::createForThread(thread)),
       m_isOwningThread(false),
       m_shouldCallGCOnShutdown(shouldCallGCOnShutdown) {}