Revert "Implement timers by posting delayed tasks"

Source/platform/ThreadTimers.h

Index: Source/platform/ThreadTimers.h
diff --git a/Source/platform/ContentType.h b/Source/platform/ThreadTimers.h
similarity index 61%
copy from Source/platform/ContentType.h
copy to Source/platform/ThreadTimers.h
index f67d4e2ca33917068892ea5f6d342cba960a65e3..031f4a7c15f43fa65ef13cecd1ee751d70d90b3c 100644
--- a/Source/platform/ContentType.h
+++ b/Source/platform/ThreadTimers.h
@@ -24,26 +24,44 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef ContentType_h
-#define ContentType_h
+#ifndef ThreadTimers_h
+#define ThreadTimers_h
 
 #include "platform/PlatformExport.h"
-#include "wtf/text/WTFString.h"
+#include "platform/SharedTimer.h"
+#include "wtf/Noncopyable.h"
+#include "wtf/HashSet.h"
+#include "wtf/Vector.h"
 
 namespace blink {
 
-class PLATFORM_EXPORT ContentType {
+class TimerBase;
+
+// A collection of timers per thread. Kept in PlatformThreadData.
+class PLATFORM_EXPORT ThreadTimers {
+    WTF_MAKE_NONCOPYABLE(ThreadTimers); WTF_MAKE_FAST_ALLOCATED(ThreadTimers);
 public:
-    explicit ContentType(const String& type);
+    ThreadTimers();
+
+    // On a thread different then main, we should set the thread's instance of the SharedTimer.
+    void setSharedTimer(WTF::PassOwnPtr<SharedTimer>);
+
+    Vector<TimerBase*>& timerHeap() { return m_timerHeap; }
+
+    void updateSharedTimer();
+    double nextFireTime() const { return m_pendingSharedTimerFireTime; }
 
-    String parameter(const String& parameterName) const;
-    String type() const;
-    Vector<String> codecs() const;
-    const String& raw() const { return m_type; }
 private:
-    String m_type;
+    static void sharedTimerFired();
+
+    void sharedTimerFiredInternal();
+
+    Vector<TimerBase*> m_timerHeap;
+    OwnPtr<SharedTimer> m_sharedTimer;
+    bool m_firingTimers; // Reentrancy guard.
+    double m_pendingSharedTimerFireTime;
 };
 
-} // namespace blink
+}
 
-#endif // ContentType_h
+#endif