[not for review] Add Draw entries to window Performance Timeline

Source/core/timing/PerformanceDrawTiming.idl

Index: Source/core/timing/PerformanceDrawTiming.idl
diff --git a/Source/modules/filesystem/HTMLInputElementFileSystem.idl b/Source/core/timing/PerformanceDrawTiming.idl
similarity index 89%
copy from Source/modules/filesystem/HTMLInputElementFileSystem.idl
copy to Source/core/timing/PerformanceDrawTiming.idl
index c55dcd9167481963a74430e7ef0e306008d51bd2..8525371a72fa14a1546f0e6e755ed8946613a752 100644
--- a/Source/modules/filesystem/HTMLInputElementFileSystem.idl
+++ b/Source/core/timing/PerformanceDrawTiming.idl
@@ -28,8 +28,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-[
-    RuntimeEnabled=FileSystem,
-] partial interface HTMLInputElement {
-    [CallWith=ExecutionContext] readonly attribute Entry[] webkitEntries;
+// See: https://dvcs.w3.org/hg/webperf/raw-file/tip/specs/ResourceTiming/Overview.html
+interface PerformanceDrawTiming : PerformanceEntry {
+    readonly attribute unsigned long sourceFrame;
 };