Just note: More tests can be added after  crbug.com/889776 .
At the moment, those new tests are out of scope.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/9b2cfae4e213c1bfcdcec8a557b91a90ede08fe9

commit 9b2cfae4e213c1bfcdcec8a557b91a90ede08fe9
Author: Hidehiko Abe <hidehiko@chromium.org>
Date: Tue Oct 02 20:23:03 2018

tast-test: Update cryptohome mount condition check.

This is to catch up with the existing mount check in autotest.
The goal is to port more cryptohome related from autotest to tast,
and in the new tests, the utilities (findPartition, validatePartition)
will be reused.

cf)
- https://chromium.git.corp.google.com/chromiumos/third_party/autotest/+/master/client/cros/cryptohome.py#432
- https://chromium.git.corp.google.com/chromiumos/third_party/autotest/+/master/client/cros/cryptohome.py#494

BUG= chromium:890710 
TEST=Ran ui.ChromeLogin on DUT.

Change-Id: I777b0038e2a4fd43a1ad4f64c396948073771bee
Reviewed-on: https://chromium-review.googlesource.com/1253961
Commit-Ready: Hidehiko Abe <hidehiko@chromium.org>
Tested-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>

[modify] https://crrev.com/9b2cfae4e213c1bfcdcec8a557b91a90ede08fe9/src/chromiumos/tast/local/cryptohome/cryptohome.go

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/4837513af7ad7cdf05461ea07a35f32be5d72f2c

commit 4837513af7ad7cdf05461ea07a35f32be5d72f2c
Author: Hidehiko Abe <hidehiko@chromium.org>
Date: Wed Oct 10 04:14:18 2018

tast-test: Translate login_Cryptohome into cryptohome.Login.

BUG= chromium:890710 
TEST=Ran on DUT.

Change-Id: I808f4b5be5c38ab2255e7bbc8fe3edc7fbbdc20e
Reviewed-on: https://chromium-review.googlesource.com/1269195
Commit-Ready: Hidehiko Abe <hidehiko@chromium.org>
Tested-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>

[add] https://crrev.com/4837513af7ad7cdf05461ea07a35f32be5d72f2c/src/chromiumos/tast/local/bundles/cros/cryptohome/login.go
[modify] https://crrev.com/4837513af7ad7cdf05461ea07a35f32be5d72f2c/src/chromiumos/tast/local/cryptohome/cryptohome.go
[modify] https://crrev.com/4837513af7ad7cdf05461ea07a35f32be5d72f2c/src/chromiumos/tast/local/bundles/cros/main.go

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/dd90ae2a102c0de83c195c7a8bb2971c9867c1a6

commit dd90ae2a102c0de83c195c7a8bb2971c9867c1a6
Author: Hidehiko Abe <hidehiko@chromium.org>
Date: Wed Oct 31 15:17:28 2018

tast-test: Improve test failure message.

BUG= chromium:890710 
TEST=Ran on DUT.

Change-Id: Ifbe3965157faca16abcf01cbc876cdb9e25e7323
Reviewed-on: https://chromium-review.googlesource.com/1309438
Commit-Ready: Hidehiko Abe <hidehiko@chromium.org>
Tested-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Dan Erat <derat@chromium.org>
Reviewed-by: Shuhei Takahashi <nya@chromium.org>

[modify] https://crrev.com/dd90ae2a102c0de83c195c7a8bb2971c9867c1a6/src/chromiumos/tast/local/bundles/cros/cryptohome/login.go

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/platform/tast-tests/+/1a34c580832324071e311521a69b44f4a167cb3e

commit 1a34c580832324071e311521a69b44f4a167cb3e
Author: Hidehiko Abe <hidehiko@chromium.org>
Date: Thu Nov 01 04:59:23 2018

tast-test: Port login_CryptohomeIncognito.

Along with the test porting, this CL implements;
- Guest Chrome login.
- Support guest user in cryptohome mount validation.

BUG= chromium:890710 
TEST=Ran on DUT.

Change-Id: Ibc5e24f56dcf93bda5256f6318bfc76820caa88a
Reviewed-on: https://chromium-review.googlesource.com/1303785
Commit-Ready: Hidehiko Abe <hidehiko@chromium.org>
Tested-by: Hidehiko Abe <hidehiko@chromium.org>
Reviewed-by: Hidehiko Abe <hidehiko@chromium.org>

[add] https://crrev.com/1a34c580832324071e311521a69b44f4a167cb3e/src/chromiumos/tast/local/bundles/cros/cryptohome/login_guest.go
[modify] https://crrev.com/1a34c580832324071e311521a69b44f4a167cb3e/src/chromiumos/tast/local/cryptohome/cryptohome.go
[modify] https://crrev.com/1a34c580832324071e311521a69b44f4a167cb3e/src/chromiumos/tast/local/chrome/chrome.go

Done for CQ cryptohome tests.