Revert of [sync] Add Sessions integration tests

Revert of [sync] Add Sessions integration tests (patchset #4 id:140001 of https://codereview.chromium.org/2713913002/ )

Reason for revert:
SingleClientSessionsSyncTest.CookieJarMismatch fails on mac:
https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests/builds/37124

Original issue's description:
> [sync] Add Sessions integration tests
> 
> Add integration tests for a number of new scenarios:
> * Multi window, multi tab
> * Navigation hierarchy changes
> * Tab movement
> 
> Add a new checker for waiting to see a SessionsHierarchy on
> the FakeServer. Refactor some existing tests to use this instead of
> waiting for sync cycle completion then manually verifying a match.
> 
> Add several new helper methods to SessionsHelper, and refactor some
> existing ones.
> 
> Add the ability to open a new Browser from an existing Profile
> to SyncTest.
> 
> R=zea@chromium.org, skym@chromium.org
> 
> BUG=695241
> 
> Review-Url: https://codereview.chromium.org/2713913002
> Cr-Commit-Position: refs/heads/master@{#453687}
> Committed: https://chromium.googlesource.com/chromium/src/+/dd0356002ee91f25daa99dd147c57913517e9aab

TBR=zea@chromium.org,skym@chromium.org,pnoland@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=695241
Review-Url: https://codereview.chromium.org/2722953002
Cr-Commit-Position: refs/heads/master@{#453773}
Committed: https://chromium.googlesource.com/chromium/src/+/aa1ab1dc32ed1b5508c7b835085a503ea8d96280

[Sergey Ulanov, 2017-03-01 00:20:57]

The CQ bit was checked by sergeyu@chromium.org

[Sergey Ulanov, 2017-03-01 00:20:58]

Created Revert of [sync] Add Sessions integration tests

[commit-bot: I haz the power, 2017-03-01 00:21:39]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2017-03-01 00:34:41]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1488327657815170, "parent_rev":
"39f9eb3f5301f73d385c6d65601c60dba4fae63e", "commit_rev":
"aa1ab1dc32ed1b5508c7b835085a503ea8d96280"}

[commit-bot: I haz the power, 2017-03-01 00:36:03]

Description was changed from

==========
Revert of [sync] Add Sessions integration tests (patchset #4 id:140001 of
https://codereview.chromium.org/2713913002/ )

Reason for revert:
SingleClientSessionsSyncTest.CookieJarMismatch fails on mac:
https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests/builds/37124

Original issue's description:
> [sync] Add Sessions integration tests
> 
> Add integration tests for a number of new scenarios:
> * Multi window, multi tab
> * Navigation hierarchy changes
> * Tab movement
> 
> Add a new checker for waiting to see a SessionsHierarchy on
> the FakeServer. Refactor some existing tests to use this instead of
> waiting for sync cycle completion then manually verifying a match.
> 
> Add several new helper methods to SessionsHelper, and refactor some
> existing ones.
> 
> Add the ability to open a new Browser from an existing Profile
> to SyncTest.
> 
> R=zea@chromium.org, skym@chromium.org
> 
> BUG=695241
> 
> Review-Url: https://codereview.chromium.org/2713913002
> Cr-Commit-Position: refs/heads/master@{#453687}
> Committed:
https://chromium.googlesource.com/chromium/src/+/dd0356002ee91f25daa99dd147c5...

TBR=zea@chromium.org,skym@chromium.org,pnoland@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=695241
==========

to

==========
Revert of [sync] Add Sessions integration tests (patchset #4 id:140001 of
https://codereview.chromium.org/2713913002/ )

Reason for revert:
SingleClientSessionsSyncTest.CookieJarMismatch fails on mac:
https://build.chromium.org/p/chromium.mac/builders/Mac10.9%20Tests/builds/37124

Original issue's description:
> [sync] Add Sessions integration tests
> 
> Add integration tests for a number of new scenarios:
> * Multi window, multi tab
> * Navigation hierarchy changes
> * Tab movement
> 
> Add a new checker for waiting to see a SessionsHierarchy on
> the FakeServer. Refactor some existing tests to use this instead of
> waiting for sync cycle completion then manually verifying a match.
> 
> Add several new helper methods to SessionsHelper, and refactor some
> existing ones.
> 
> Add the ability to open a new Browser from an existing Profile
> to SyncTest.
> 
> R=zea@chromium.org, skym@chromium.org
> 
> BUG=695241
> 
> Review-Url: https://codereview.chromium.org/2713913002
> Cr-Commit-Position: refs/heads/master@{#453687}
> Committed:
https://chromium.googlesource.com/chromium/src/+/dd0356002ee91f25daa99dd147c5...

TBR=zea@chromium.org,skym@chromium.org,pnoland@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=695241

Review-Url: https://codereview.chromium.org/2722953002
Cr-Commit-Position: refs/heads/master@{#453773}
Committed:
https://chromium.googlesource.com/chromium/src/+/aa1ab1dc32ed1b5508c7b835085a...
==========

[commit-bot: I haz the power, 2017-03-01 00:36:04]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/aa1ab1dc32ed1b5508c7b835085a...