Use sequence<T> instead of T[] where possible and document exceptions

third_party/WebKit/Source/core/clipboard/DataTransfer.idl

Index: third_party/WebKit/Source/core/clipboard/DataTransfer.idl
diff --git a/third_party/WebKit/Source/core/clipboard/DataTransfer.idl b/third_party/WebKit/Source/core/clipboard/DataTransfer.idl
index 7b56519ba4f2981eb845ba38906059932823150f..7f5d90aa20f086be24905610dbf0a47a3a4b4f15 100644
--- a/third_party/WebKit/Source/core/clipboard/DataTransfer.idl
+++ b/third_party/WebKit/Source/core/clipboard/DataTransfer.idl
@@ -37,6 +37,8 @@ interface DataTransfer {
     void setDragImage(Element image, long x, long y);
 
     /* old interface */
+    // TODO(foolip): Switch to FrozenArray<DOMString> when the spec is fixed:
+    // https://github.com/whatwg/html/issues/11
     [SameObject] readonly attribute DOMString[] types;
     DOMString getData(DOMString format);
     void setData(DOMString format, DOMString data);