Reland: Move autofill tests chrome ChromeShellTest to ChromePublicTest

Reland: Move autofill tests chrome ChromeShellTest to ChromePublicTest

BUG=505040
TEST=None
TBR=aurimas

Committed: https://crrev.com/30fdd277283888ddd79308ae885a8ecbc3ca8fe6
Cr-Commit-Position: refs/heads/master@{#339718}

[pkotwicz, 2015-07-21 18:46:17]

aurimas@ PTAL. Patch set #1 has the code as it landed in
https://codereview.chromium.org/1230073003/

I removed the calls to clearAppData() because they were redundant.
ChromeActivityTestCaseBase#setUp() already calls clearAppData()

I fixed the bug which caused the original to be reverted in
https://codereview.chromium.org/1245073003/

[aurimas (slooooooooow), 2015-07-21 18:47:16]

lgtm

[pkotwicz, 2015-07-21 18:52:21]

The CQ bit was checked by pkotwicz@chromium.org

[commit-bot: I haz the power, 2015-07-21 18:53:29]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1250683002/20001

[commit-bot: I haz the power, 2015-07-21 19:35:17]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2015-07-21 19:49:15]

Patchset 2 (id:??) landed as
https://crrev.com/30fdd277283888ddd79308ae885a8ecbc3ca8fe6
Cr-Commit-Position: refs/heads/master@{#339718}