Revert of Disable ImeTest testLongPressInputWhileComposingText due to flakiness

Revert of Disable ImeTest testLongPressInputWhileComposingText due to flakiness (patchset #1 id:1 of https://codereview.chromium.org/2631313004/ )

Reason for revert:
test failures observed only with random patchset, re-enabling until we get more evidence that this is flaky.

Original issue's description:
> Disable ImeTest testLongPressInputWhileComposingText due to flakiness
> 
> BUG=682080
> TBR=changwan@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2631313004
> Cr-Commit-Position: refs/heads/master@{#444251}
> Committed: https://chromium.googlesource.com/chromium/src/+/00320b068a7e061eb3634293c19a0401357fa66a

TBR=meade@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=682080
Review-Url: https://codereview.chromium.org/2657513003
Cr-Commit-Position: refs/heads/master@{#445613}
Committed: https://chromium.googlesource.com/chromium/src/+/047691b2cea1a7a8444e3b54ecd4827d87da2995

[Changwan Ryu, 2017-01-24 02:09:15]

The CQ bit was checked by changwan@chromium.org

[Changwan Ryu, 2017-01-24 02:09:15]

Created Revert of Disable ImeTest testLongPressInputWhileComposingText due to
flakiness

[commit-bot: I haz the power, 2017-01-24 02:09:57]

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, 2017-01-24 02:37:21]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1485223755547060, "parent_rev":
"ec72fc4b04c800b1d54063d09b79350fdcd0cc15", "commit_rev":
"047691b2cea1a7a8444e3b54ecd4827d87da2995"}

[commit-bot: I haz the power, 2017-01-24 02:38:20]

Description was changed from

==========
Revert of Disable ImeTest testLongPressInputWhileComposingText due to flakiness
(patchset #1 id:1 of https://codereview.chromium.org/2631313004/ )

Reason for revert:
test failures observed only with random patchset, re-enabling until we get more
evidence that this is flaky.

Original issue's description:
> Disable ImeTest testLongPressInputWhileComposingText due to flakiness
> 
> BUG=682080
> TBR=changwan@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2631313004
> Cr-Commit-Position: refs/heads/master@{#444251}
> Committed:
https://chromium.googlesource.com/chromium/src/+/00320b068a7e061eb3634293c19a...

TBR=meade@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=682080
==========

to

==========
Revert of Disable ImeTest testLongPressInputWhileComposingText due to flakiness
(patchset #1 id:1 of https://codereview.chromium.org/2631313004/ )

Reason for revert:
test failures observed only with random patchset, re-enabling until we get more
evidence that this is flaky.

Original issue's description:
> Disable ImeTest testLongPressInputWhileComposingText due to flakiness
> 
> BUG=682080
> TBR=changwan@chromium.org
> 
> Review-Url: https://codereview.chromium.org/2631313004
> Cr-Commit-Position: refs/heads/master@{#444251}
> Committed:
https://chromium.googlesource.com/chromium/src/+/00320b068a7e061eb3634293c19a...

TBR=meade@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=682080

Review-Url: https://codereview.chromium.org/2657513003
Cr-Commit-Position: refs/heads/master@{#445613}
Committed:
https://chromium.googlesource.com/chromium/src/+/047691b2cea1a7a8444e3b54ecd4...
==========

[commit-bot: I haz the power, 2017-01-24 02:38:21]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/047691b2cea1a7a8444e3b54ecd4...