Create ResourceProgressEvent, expose as Chromium API

Source/core/dom/ResourceProgressEvent.idl

Index: Source/core/dom/ResourceProgressEvent.idl
diff --git a/Source/core/inspector/ScriptProfileNode.idl b/Source/core/dom/ResourceProgressEvent.idl
similarity index 68%
copy from Source/core/inspector/ScriptProfileNode.idl
copy to Source/core/dom/ResourceProgressEvent.idl
index c3eec68b0adf223e7ab1d8b98cf6ce938a6e06f8..c08192a0a34a8819ab9dd8ae274d62ea244d6505 100644
--- a/Source/core/inspector/ScriptProfileNode.idl
+++ b/Source/core/dom/ResourceProgressEvent.idl
@@ -1,6 +1,5 @@
 /*
- * Copyright (C) 2010 Apple Inc. All rights reserved.
- * Copyright (C) 2010 Google Inc. All rights reserved.
+ * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -21,20 +20,19 @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
  */
 
+// ResourceProgressEvent is a non-standard class that is simply a ProgressEvent
+// with an additional read-only "url" property containing a string URL. This is
+// used by the Chromium NaCl integration to indicate to which resource the
+// event applies. This is useful because the NaCl integration will download
+// (and translate in the case of PNaCl) multiple binary files. It is not
+// constructable by web content at all, and so does not provide the usual
+// EventInit pattern for Event construction.
 [
     NoInterfaceObject,
-] interface ScriptProfileNode {
-    readonly attribute DOMString functionName;
+] interface ResourceProgressEvent : ProgressEvent {
     readonly attribute DOMString url;
-    readonly attribute unsigned long lineNumber;
-    readonly attribute double totalTime;
-    readonly attribute double selfTime;
-    readonly attribute unsigned long numberOfCalls;
-    sequence<ScriptProfileNode> children();
-    readonly attribute boolean visible;
-    readonly attribute unsigned long callUID;
 };