node-set($x), when $x is empty, should not halt XSLT processing

node-set($x), when $x is empty, should not halt XSLT processing

node-set is polymorphic; if called with a string, it returns a
node-set containing a text node with that content. The libxslt roll in
r425586 broke this behavior because Blink's fork of the node-set
extension returned a text node without an owner document. Fix that.

BUG=689977
Review-Url: https://codereview.chromium.org/2750943004
Cr-Commit-Position: refs/heads/master@{#457692}
(cherry picked from commit 3f6e482b7f13c1fc5bd68227321ef6da0ddf9937)

Review-Url: https://codereview.chromium.org/2784623002 .
Cr-Commit-Position: refs/branch-heads/2987@{#885}
Cr-Branched-From: ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed: https://chromium.googlesource.com/chromium/src/+/ceaae84ca2faad7f865928102a19e3f3fcf4a654

[Oliver Chang, 2017-03-28 20:05:34]

Description was changed from

==========
node-set($x), when $x is empty, should not halt XSLT processing

node-set is polymorphic; if called with a string, it returns a
node-set containing a text node with that content. The libxslt roll in
r425586 broke this behavior because Blink's fork of the node-set
extension returned a text node without an owner document. Fix that.

BUG=689977

Review-Url: https://codereview.chromium.org/2750943004
Cr-Commit-Position: refs/heads/master@{#457692}
(cherry picked from commit 3f6e482b7f13c1fc5bd68227321ef6da0ddf9937)
==========

to

==========
node-set($x), when $x is empty, should not halt XSLT processing

node-set is polymorphic; if called with a string, it returns a
node-set containing a text node with that content. The libxslt roll in
r425586 broke this behavior because Blink's fork of the node-set
extension returned a text node without an owner document. Fix that.

BUG=689977

Review-Url: https://codereview.chromium.org/2750943004
Cr-Commit-Position: refs/heads/master@{#457692}
(cherry picked from commit 3f6e482b7f13c1fc5bd68227321ef6da0ddf9937)

Review-Url: https://codereview.chromium.org/2784623002 .
Cr-Commit-Position: refs/branch-heads/2987@{#885}
Cr-Branched-From:
ad51088c0e8776e8dcd963dbe752c4035ba6dab6-refs/heads/master@{#444943}
Committed:
https://chromium.googlesource.com/chromium/src/+/ceaae84ca2faad7f865928102a19...
==========

[Oliver Chang, 2017-03-28 20:05:36]

Committed patchset #1 (id:1) manually as
ceaae84ca2faad7f865928102a19e3f3fcf4a654.