Update showKeyboard method to be more aggressive.

Update showKeyboard method to be more aggressive.

Keyboard does not show up in certain cases (like landscape phones on JB devices)
by simply using InputMethodManager.SHOW_IMPLICIT.

BUG=411854
Committed: https://crrev.com/f277bafe5e3ac6b4e01d2f6d2ddbef1a3f3aeed4
Cr-Commit-Position: refs/heads/master@{#297944}

[aurimas (slooooooooow), 2014-10-02 21:38:13]

aurimas@chromium.org changed reviewers:
+ tedchoc@chromium.org

[aurimas (slooooooooow), 2014-10-02 21:38:13]

PTAL

[Ted C, 2014-10-02 21:45:19]

lgtm

[aurimas (slooooooooow), 2014-10-02 21:52:11]

The CQ bit was checked by aurimas@chromium.org

[commit-bot: I haz the power, 2014-10-02 21:53:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/620263002/1

[commit-bot: I haz the power, 2014-10-02 23:18:02]

Committed patchset #1 (id:1) as db34482fd7ad1816ca44b2d9856bd1f3e68ae864

[commit-bot: I haz the power, 2014-10-02 23:21:29]

Patchset 1 (id:??) landed as
https://crrev.com/f277bafe5e3ac6b4e01d2f6d2ddbef1a3f3aeed4
Cr-Commit-Position: refs/heads/master@{#297944}