Revert of Exposed the children of elements with role textbox in order to make rich text information available…

Revert of Exposed the children of elements with role textbox in order to make rich text information available… (patchset #4 id:60001 of https://codereview.chromium.org/1821723002/ )

Reason for revert:
DumpAccessibilityTreeTest.AccessibilityAriaTextboxWithRichText is now failing on most Android bots. See crbug.com/597157

Original issue's description:
> Exposed the children of elements with role textbox in order to make rich text information available to Windows screen readers.
>
> If we have an HTML element with role="textbox" we correctly assign it an IA role of ROLE_SYSTEM_TEXT. This is the same as what FireFox does.
> However, contrary to an <input> or <textarea> element, we should expose its children so that any rich text information would be available to Windows screen readers.
> Note that we also keep exposing a flatten representation of the children's text in the value attribute because Jaws and older versions of VoiceOver require it.
> BUG=542998
> TESTED:browser tests, Blink layout tests, manually with Jaws and NVDA with <input>, content editable and content editable with role="textbox"
> R=dmazzoni@chromium.org
>
> Committed: https://crrev.com/9a702688af0b856d52e96f1ce9b5346714ce8985
> Cr-Commit-Position: refs/heads/master@{#382526}

TBR=dmazzoni@chromium.org,nektar@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542998
Committed: https://crrev.com/0fc016d5f294b89638acdd640bf677d2349cd7ec
Cr-Commit-Position: refs/heads/master@{#382774}

[newt (away), 2016-03-23 02:31:32]

Created Revert of Exposed the children of elements with role textbox in order to
make rich text information available…

[commit-bot: I haz the power, 2016-03-23 02:36:43]

Description was changed from

==========
Revert of Exposed the children of elements with role textbox in order to make
rich text information available… (patchset #4 id:60001 of
https://codereview.chromium.org/1821723002/ )

Reason for revert:
DumpAccessibilityTreeTest.AccessibilityAriaTextboxWithRichText is now failing on
most Android bots. See crbug.com/597157

Original issue's description:
> Exposed the children of elements with role textbox in order to make rich text
information available to Windows screen readers.
> 
> If we have an HTML element with role="textbox" we correctly assign it an IA
role of ROLE_SYSTEM_TEXT. This is the same as what FireFox does.
> However, contrary to an <input> or <textarea> element, we should expose its
children so that any rich text information would be available to Windows screen
readers.
> Note that we also keep exposing a flatten representation of the children's
text in the value attribute because Jaws and older versions of VoiceOver require
it.
> BUG=542998
> TESTED:browser tests, Blink layout tests, manually with Jaws and NVDA with
<input>, content editable and content editable with role="textbox"
> R=dmazzoni@chromium.org
> 
> Committed: https://crrev.com/9a702688af0b856d52e96f1ce9b5346714ce8985
> Cr-Commit-Position: refs/heads/master@{#382526}

TBR=dmazzoni@chromium.org,nektar@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542998
==========

to

==========
Revert of Exposed the children of elements with role textbox in order to make
rich text information available… (patchset #4 id:60001 of
https://codereview.chromium.org/1821723002/ )

Reason for revert:
DumpAccessibilityTreeTest.AccessibilityAriaTextboxWithRichText is now failing on
most Android bots. See crbug.com/597157

Original issue's description:
> Exposed the children of elements with role textbox in order to make rich text
information available to Windows screen readers.
>
> If we have an HTML element with role="textbox" we correctly assign it an IA
role of ROLE_SYSTEM_TEXT. This is the same as what FireFox does.
> However, contrary to an <input> or <textarea> element, we should expose its
children so that any rich text information would be available to Windows screen
readers.
> Note that we also keep exposing a flatten representation of the children's
text in the value attribute because Jaws and older versions of VoiceOver require
it.
> BUG=542998
> TESTED:browser tests, Blink layout tests, manually with Jaws and NVDA with
<input>, content editable and content editable with role="textbox"
> R=dmazzoni@chromium.org
>
> Committed: https://crrev.com/9a702688af0b856d52e96f1ce9b5346714ce8985
> Cr-Commit-Position: refs/heads/master@{#382526}

TBR=dmazzoni@chromium.org,nektar@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=542998

Committed: https://crrev.com/0fc016d5f294b89638acdd640bf677d2349cd7ec
Cr-Commit-Position: refs/heads/master@{#382774}
==========