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/1131043005

Cr-Commit-Position: refs/branch-heads/2403@{#14}
Cr-Branched-From: f54b8097a9c45ed4ad308133d49f05325d6c5070-refs/heads/master@{#330231}
1 file changed