Make setBaseAndExtent's arguments non-optional

third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html

Index: third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html
diff --git a/third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html b/third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html
index 3cba805269a89cd4d3ebc00d0a24c1617f422277..1f0f5f22ae882946298164bb496ad131405dc49c 100644
--- a/third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html
+++ b/third_party/WebKit/LayoutTests/editing/execCommand/apply-inline-style-to-element-with-no-renderer-crash.html
@@ -25,7 +25,7 @@ test(function() {
 
     input=document.createElement('input');
     textPath.parentNode.insertBefore(input, textPath);
-    window.getSelection().setBaseAndExtent(input, 4);

[yoichio, 2016/04/19 07:21:16]

setBaseAndExtent(node, offset) should be collapse(node, offset).

[philipj_slow, 2016/04/19 12:34:31]

If this particular instance is replaced with collapse(input, 4), throws "Failed
to execute 'collapse' on 'Selection': There is no child at offset 4."

Per spec both collapse and setBaseAndExtent end up setting a range and so there
should be some equivalence, but as actually implemented it doesn't look like
they do the same thing, as setBaseAndExtent takes a rather different path.

I could check what the selection was after this call originally and try to make
it the same using collapse, but is it anchorNode+focusNode or
baseNode+extentNode or all of them that I should try to keep the same?

+    window.getSelection().setBaseAndExtent(input, 4, null, 0);
 
     document.designMode='on';
     document.execCommand('Transpose');