Revert "Implement timers by posting delayed tasks"

Source/platform/PlatformThreadData.h

Index: Source/platform/PlatformThreadData.h
diff --git a/Source/platform/Task.h b/Source/platform/PlatformThreadData.h
similarity index 77%
copy from Source/platform/Task.h
copy to Source/platform/PlatformThreadData.h
index b4fbafb9ed7c37e0e609da56e261d41e21fa3172..428da4b9e48b3a393b82d2835918fbe5508c6ef7 100644
--- a/Source/platform/Task.h
+++ b/Source/platform/PlatformThreadData.h
@@ -28,32 +28,32 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef Task_h
-#define Task_h
+#ifndef PlatformThreadData_h
+#define PlatformThreadData_h
 
-#include "public/platform/WebThread.h"
-#include "wtf/Functional.h"
+#include "platform/PlatformExport.h"
+#include "wtf/Noncopyable.h"
 #include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
 
 namespace blink {
 
-class Task : public WebThread::Task {
+class ThreadTimers;
+
+class PLATFORM_EXPORT PlatformThreadData {
+    WTF_MAKE_NONCOPYABLE(PlatformThreadData);
 public:
-    explicit Task(PassOwnPtr<Closure> closure)
-        : m_closure(closure)
-    {
-    }
+    PlatformThreadData();
+    ~PlatformThreadData();
+
+    ThreadTimers& threadTimers() { return *m_threadTimers; }
 
-    virtual void run() override
-    {
-        (*m_closure)();
-    }
+    static PlatformThreadData& current();
+    void destroy();
 
 private:
-    OwnPtr<Closure> m_closure;
+    OwnPtr<ThreadTimers> m_threadTimers;
 };
 
 } // namespace blink
 
-#endif // Task_h
+#endif // PlatformThreadData_h