Revert of Modifications to layout test framework so that it can work with browser_tests. (https://codereview.chromium.org/378113003/)

Reason for revert:
Might have broken a number of LayoutTests.

Original issue's description:
> Modifications to layout test framework so that it can work with browsertests. This is for end to end testing for print preview.
> 
> BUG=388517
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=178486

TBR=dpranke@chromium.org,thestig@chromium.org,ivandavid@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=388517

Review URL: https://codereview.chromium.org/398543005

git-svn-id: svn://svn.chromium.org/blink/trunk@178492 bbb929c8-8fbe-4397-9dbb-9b2b20218538