WIP - not ready for review

Source/platform/TimerHeapEntry.cpp

Index: Source/platform/TimerHeapEntry.cpp
diff --git a/Source/platform/TimerHeapEntry.cpp b/Source/platform/TimerHeapEntry.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..728aebbb9de0772ab527ecea664f34ed757fceeb
--- /dev/null
+++ b/Source/platform/TimerHeapEntry.cpp
@@ -0,0 +1,36 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "platform/TimerHeapEntry.h"
+
+#include "platform/Timer.h"
+#include "platform/TimerHeap.h"
+#include <limits>
+
+namespace blink {
+
+TimerHeapEntry::TimerHeapEntry(TimerHeap* owner)
+    : m_owner(owner)
+    , m_state(TimerHeapEntryNotInHeap)
+    , m_value(0)
+    , m_heapIndex(std::numeric_limits<std::size_t>::max())
+{
+    ASSERT(m_owner);
+}
+
+TimerHeapEntry::~TimerHeapEntry()
+{
+}
+
+void TimerHeapEntry::setValue(TimerBase& timer, double newValue)
+{
+    ASSERT(&timer.heapEntry() == this);
+
+    double oldValue = m_value;
+    m_value = newValue;
+    m_owner->didChangeValue(timer, oldValue);
+}
+
+} // namespace blink