Fix loadUrl for javascript urls.

A recent update
https://codereview.chromium.org/1022993002
broke the loading of javascript URLs. This patch reverts only the part
of the update which is broken.

NOPRESUBMIT=true
NOTRY=true
BUG=489259

(cherry picked from commit 22abb71d9c3f0d6ed7f7252385e49673ad5c5fea)

Review URL: https://codereview.chromium.org/1131523006

Cr-Commit-Position: refs/branch-heads/2357@{#410}
Cr-Branched-From: 59d4494849b405682265ed5d3f5164573b9a939b-refs/heads/master@{#323860}
1 file changed