Revert of Revert "Enable BlockingLoginTest, ForceMaximizeOnFirstRunTest, UserCloudPolicyManagerTest

Revert of Revert "Enable BlockingLoginTest, ForceMaximizeOnFirstRunTest, UserCloudPolicyManagerTest, for webv… (patchset #1 id:1 of https://codereview.chromium.org/1109393005/)

Reason for revert:
This was a speculative revert, but I don't believe the browser tests reverted here were the cause of the blink failures.

Original issue's description:
> Revert "Enable BlockingLoginTest, ForceMaximizeOnFirstRunTest, UserCloudPolicyManagerTest, for webview."
>
> This reverts commit 8c52ec023857ec7d082d54518864edd84d25b116.
>
> This seems to be breaking "Linux ChromiumOS Tests (dbg)" on the Blink waterfall, and blocking the Blink roll:
> http://build.chromium.org/p/chromium.webkit/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29/builds/1485
>
> TBR=achuith,nkostylev@chromium.org
> BUG=
> NOTREECHECKS=true
>
> Committed: https://crrev.com/a5080f268e879b41a34a3f912fb5dabfc6b7a2dd
> Cr-Commit-Position: refs/heads/master@{#327552}

TBR=nkostylev@chromium.org,macourteau@chromium.org,senorblanco@chromium.org

BUG=475567, 477402
Committed: https://crrev.com/c73fce65a5963c8013e8a0a2b0251ba7c02bfccc
Cr-Commit-Position: refs/heads/master@{#327611}

[achuithb, 2015-04-29 22:44:04]

Created Revert of Revert "Enable BlockingLoginTest, ForceMaximizeOnFirstRunTest,
UserCloudPolicyManagerTest, for webv…

[achuithb, 2015-04-29 22:44:22]

The CQ bit was unchecked by achuith@chromium.org

[achuithb, 2015-04-29 22:46:32]

The CQ bit was checked by achuith@chromium.org

[commit-bot: I haz the power, 2015-04-29 22:47:14]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1111593006/1

[commit-bot: I haz the power, 2015-04-29 23:22:04]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-04-29 23:22:59]

Patchset 1 (id:??) landed as
https://crrev.com/c73fce65a5963c8013e8a0a2b0251ba7c02bfccc
Cr-Commit-Position: refs/heads/master@{#327611}