Revert 172109 "Use url:: instead of url_util:: url_parse:: url_c..."

Speculative revert, this appears to have broken Android release:
<http://build.chromium.org/p/tryserver.chromium/builders/blink_android_compile_rel/builds/3407>

> Use url:: instead of url_util:: url_parse:: url_canon::
> 
> BUG=364747
> TEST=none, no functional changes
> 
> Review URL: https://codereview.chromium.org/245223004

TBR=vitalybuka@chromium.org

Review URL: https://codereview.chromium.org/246683002

git-svn-id: svn://svn.chromium.org/blink/trunk@172114 bbb929c8-8fbe-4397-9dbb-9b2b20218538