Revert of Add the missing text input state tracking code to RenderWidgetHostViewMac.

Revert of Add the missing text input state tracking code to RenderWidgetHostViewMac. (patchset #2 id:20001 of https://codereview.chromium.org/1878523002/ )

Reason for revert:
This is needed to revert 
https://codereview.chromium.org/1652483002/. The original CL caused many regressions.


Original issue's description:
> Add the missing text input state tracking code to RenderWidgetHostViewMac.
> 
> Following the fix for crbug.com/578167 (CL 1652483002), a small part of
> the Mac related code was removed due to bad merging (after Patch 7).
> This CL fixes the issue by storing the new values of text input state in
> RenderWidgetHostViewMac as reported by the WebContentsImpl.
> 
> BUG=601738
> 
> Committed: https://crrev.com/46248c7ed4872cffc4ebb0b9da458678f7d7e7a3
> Cr-Commit-Position: refs/heads/master@{#386504}

TBR=creis@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=601738

[EhsanK, 2016-04-15 19:21:16]

Created Revert of Add the missing text input state tracking code to
RenderWidgetHostViewMac.

[EhsanK, 2016-04-15 19:21:22]

The CQ bit was checked by ekaramad@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2016-04-15 19:21:41]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1883293006/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1883293006/1

[commit-bot: I haz the power, 2016-04-15 20:11:23]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2016-04-15 20:11:24]

Dry run: This issue passed the CQ dry run.

[Charlie Reis, 2016-04-15 20:46:34]

This is closed in favor of https://codereview.chromium.org/1889313002/, right?