Revert of Implement timers by posting delayed tasks

Source/core/Init.cpp

Index: Source/core/Init.cpp
diff --git a/Source/core/Init.cpp b/Source/core/Init.cpp
index 652dfa5fbeb8da5b8171cbb74fcf9fe9a2cb4d0d..e59fb58cecae13303a9b37bcc9368d45085a1eb4 100644
--- a/Source/core/Init.cpp
+++ b/Source/core/Init.cpp
@@ -54,6 +54,7 @@
 #include "core/workers/WorkerThread.h"
 #include "platform/EventTracer.h"
 #include "platform/FontFamilyNames.h"
+#include "platform/PlatformThreadData.h"
 #include "platform/weborigin/KURL.h"
 #include "platform/weborigin/SecurityPolicy.h"
 #include "wtf/Partitions.h"
@@ -109,6 +110,10 @@
 
     registerEventFactory();
 
+    // Ensure that the main thread's thread-local data is initialized before
+    // starting any worker threads.
+    PlatformThreadData::current();
+
     StringImpl::freezeStaticStrings();
 
     // Creates HTMLParserThread::shared and ScriptStreamerThread::shared, but