Revert of Simplify DoParseProgram

Revert of Simplify DoParseProgram (patchset #2 id:20001 of https://codereview.chromium.org/1058363003/)

Reason for revert:
[Sheriff] Changes some layout tests on all platforms, e.g.:
http://build.chromium.org/p/client.v8/builders/V8-Blink%20Linux%2032/builds/2543

Original issue's description:
> Simplify DoParseProgram
>
> DoParseProgram doesn't appear to need to receive toplevel scopes as
> arguments; it can properly set the end_position of the scopes to the
> scanner's position after parsing is complete.
>
> R=marja@chromium.org
> BUG=
> LOG=N
>
> Committed: https://crrev.com/8da9252f61d3c499a78b0b94299c314b2eb0b0c8
> Cr-Commit-Position: refs/heads/master@{#27847}

TBR=marja@chromium.org,wingo@igalia.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=

Committed: https://crrev.com/c85b22486a2d3066dec960b5073d6b2a07a7482d
Cr-Commit-Position: refs/heads/master@{#27856}

[Michael Achenbach, 2015-04-15 17:20:16]

Created Revert of Simplify DoParseProgram

[commit-bot: I haz the power, 2015-04-15 17:20:25]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1089623002/1

[commit-bot: I haz the power, 2015-04-15 17:20:35]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-15 17:20:49]

Patchset 1 (id:??) landed as
https://crrev.com/c85b22486a2d3066dec960b5073d6b2a07a7482d
Cr-Commit-Position: refs/heads/master@{#27856}