Merge 221688 "Implement put_accvalue for textfields and location..."

Merge 221688 "Implement put_accvalue for textfields and location..."

I encountered conflicts while merging location_bar_view.cc.
I did not merge any of the function reordering from the original CL.
(reduces merge footprint, avoids conflicts, retains functionality)
Dominic, please review the merge at your earliest convenience.

> Implement put_accvalue for textfields and location bar.
> 
> All interactive views implement GetAccessibleState
> to provide accessibility information about the current
> state of the view. This struct now includes a callback
> that can be used to change the string value, since
> automation software wants to fill in text fields,
> and this interface is implemented for Textfield
> and LocationBarView, and hooked up to put_accValue.
> 
> BUG=260266
> 
> Review URL: https://chromiumcodereview.appspot.com/23441024

TBR=dmazzoni@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=223525

[msw, 2013-09-17 03:45:23]

Committed patchset #1 manually as r223525.

[dmazzoni, 2013-09-17 16:55:08]

lgtm

https://codereview.chromium.org/23983039/diff/1/chrome/browser/ui/views/locat...
File chrome/browser/ui/views/location_bar/location_bar_view.h (left):

https://codereview.chromium.org/23983039/diff/1/chrome/browser/ui/views/locat...
chrome/browser/ui/views/location_bar/location_bar_view.h:404: void
ToggleVisibility(bool new_vis, views::View* view);
For the record, this was never implemented and never called. It's a tiny cleanup
that I did as part of this change.