Low risk non-nullable => nullable change

third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl

Index: third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl
diff --git a/third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl b/third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl
index a9d8c8ec95081f7002c5385c7a348986bda7e03c..19ac15ea67cd2d7653c45659dd21cee54c6de37f 100644
--- a/third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl
+++ b/third_party/WebKit/Source/core/html/HTMLTextAreaElement.idl
@@ -53,9 +53,9 @@ interface HTMLTextAreaElement : HTMLElement {
 
     void select();
     // TODO(foolip): selectionStart and selectionEnd should be unsigned long.
-    attribute long selectionStart;
-    attribute long selectionEnd;
-    attribute DOMString selectionDirection;
+    attribute long? selectionStart;
+    attribute long? selectionEnd;
+    attribute DOMString? selectionDirection;
     [RaisesException] void setRangeText(DOMString replacement);
     [RaisesException] void setRangeText(DOMString replacement,
                                         unsigned long start,