Fix the issue that virtual keyboard does not show up.

Fix the issue that virtual keyboard does not show up.


BUG=Virtual keyboard does not shop up on cros device
TEST=Test on cros device manually


Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98808

[Peng, 2011-08-29 16:36:22]

We need webkit always reports the text input type changes. So we can use it to
control the visibility of the virtual keyboard.

[bryeung, 2011-08-29 19:30:03]

LGTM

Peng and I discussed this offline.  It is necessary to fix the keyboard display
issues on Tangent.  It also introduces some IPC overhead on device when ibus is
not running.  It is not possible to avoid the overhead, because all
InputMethodUpdates are grouped together (i.e. you can't disable caret position
updates without also disabling text type changed updates).  All that said, LGTM.

[commit-bot: I haz the power, 2011-08-29 22:47:43]

The commit queue went berserk retrying too often for a
seemingly flaky test. Builder is linux, revision is 98704, job name
was 7789002-1 (retry) (retry) (retry) (retry).

[James Su, 2011-08-30 01:25:49]

LGTM.

[commit-bot: I haz the power, 2011-08-30 03:06:47]

List of reviewers changed.

[commit-bot: I haz the power, 2011-08-30 13:41:41]

Change committed as 98808