Blink changes to record interest rects for http://w3c.github.io/frame-timing/

Source/core/timing/PerformanceRenderTiming.idl

Index: Source/core/timing/PerformanceRenderTiming.idl
diff --git a/Source/bindings/tests/idls/core/TestInterfaceConstructor3.idl b/Source/core/timing/PerformanceRenderTiming.idl
similarity index 88%
copy from Source/bindings/tests/idls/core/TestInterfaceConstructor3.idl
copy to Source/core/timing/PerformanceRenderTiming.idl
index 19b6669a0e57ed612ba86fc12ddf6497c7495e6d..9ec0da47d70c2e0b70463b2adbfc09208dee543e 100644
--- a/Source/bindings/tests/idls/core/TestInterfaceConstructor3.idl
+++ b/Source/core/timing/PerformanceRenderTiming.idl
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2013 Google Inc. All rights reserved.
+ * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
@@ -28,8 +28,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-// Test for length > 0, non-overloaded constructor.
-[
-    Constructor(DOMString stringArg),
-] interface TestInterfaceConstructor3 {
+// See: http://w3c.github.io/frame-timing/
+interface PerformanceRenderTiming : PerformanceEntry {
+    readonly attribute unsigned long sourceFrame;
 };