Make cols/rows/span not accept zero when set from idl

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

Index: third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp b/third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp
index 9dc31957b8291babe5059ad319c71c9bc1385618..e0094599748743d3198ce7e963cb7a80e2c1c627 100644
--- a/third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLTextAreaElement.cpp
@@ -626,11 +626,11 @@ void HTMLTextAreaElement::accessKeyAction(bool) {
 }
 
 void HTMLTextAreaElement::setCols(unsigned cols) {
-  setUnsignedIntegralAttribute(colsAttr, cols);
+  setUnsignedIntegralAttribute(colsAttr, cols ? cols : defaultCols);
 }
 
 void HTMLTextAreaElement::setRows(unsigned rows) {
-  setUnsignedIntegralAttribute(rowsAttr, rows);
+  setUnsignedIntegralAttribute(rowsAttr, rows ? rows : defaultRows);
 }
 
 bool HTMLTextAreaElement::matchesReadOnlyPseudoClass() const {