Revert of Fix to keep the selection of the text field in input element after setSelectionRange...

Revert of Fix to keep the selection of the text field in input element after setSelectionRange is called by d… (patchset #7 id:160001 of https://codereview.chromium.org/507533002/)

Reason for revert:
Suspected cause of flaky failures of org.chromium.content.browser.input.ImeTest on Android bots - see http://crbug.com/411756

Original issue's description:
> Fix to keep the selection of the text field in input element after setSelectionRange is called by dom events related to mouse
> 
> The problem is that the selection is cleared when handling mouse release.
> The selection should be kept if the selection is set by setSelectionRange during handling mouse event.
> 
> BUG=32865
> R=yosin@chromium.org
> R=rbyers@chromium.org
> TEST=LayoutTests/fast/forms/setrangetext-within-events.html
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181490

TBR=yosin@chromium.org,yoichio@chromium.org,rbyers@chromium.org,kenjibaheux@chromium.org,myid.o.shin@gmail.com
NOTREECHECKS=true
NOTRY=true
BUG=32865
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=181565

[ppi, 2014-09-08 15:56:08]

Created Revert of Fix to keep the selection of the text field in input element
after setSelectionRange is called by d…

[ppi, 2014-09-08 15:57:53]

ppi@chromium.org changed reviewers:
+ jam@chromium.org