Merge to M56: Add kAccessibilityFocusFallsbackToWidget property

Merge to M56: Add kAccessibilityFocusFallsbackToWidget property

TBR=dmazzoni@chromium.org, reveman@chromium.org, sky@chromium.org

Original description:
Add kAccessibilityFocusFallsbackToWidget property

- Added kAccessibilityFocusFallsbackToWidget property to aura::Window.
- Default value of kAccessibilityFocusFallsbackToWidget is true.
- kAccessibilityFocusFallsbackToWidget is set to false for arc window.

BUG=661061
TEST=manually tested as described in the issue; User can navigate
     elements in Android window by using TalkBack.
     interactive_ui_tests:SpokenFeedbackTest

Review-Url: https://codereview.chromium.org/2530073002
Cr-Commit-Position: refs/heads/master@{#437469}
(cherry picked from commit 7f0cf5b355d668d98b8097e850eb33a9b86a727a)

Committed: https://chromium.googlesource.com/chromium/src/+/23918093598100679745e8df43a435104a1cab09

[yawano, 2016-12-12 07:09:23]

Description was changed from

==========
Merge to M56: Add kAccessibilityFocusFallsbackToWidget property

TBR=dmazzoni@chromium.org, reveman@chromium.org, sky@chromium.org

Original description:
Add kAccessibilityFocusFallsbackToWidget property

- Added kAccessibilityFocusFallsbackToWidget property to aura::Window.
- Default value of kAccessibilityFocusFallsbackToWidget is true.
- kAccessibilityFocusFallsbackToWidget is set to false for arc window.

BUG=661061
TEST=manually tested as described in the issue; User can navigate
     elements in Android window by using TalkBack.
     interactive_ui_tests:SpokenFeedbackTest

Review-Url: https://codereview.chromium.org/2530073002
Cr-Commit-Position: refs/heads/master@{#437469}
(cherry picked from commit 7f0cf5b355d668d98b8097e850eb33a9b86a727a)
==========

to

==========
Merge to M56: Add kAccessibilityFocusFallsbackToWidget property

TBR=dmazzoni@chromium.org, reveman@chromium.org, sky@chromium.org

Original description:
Add kAccessibilityFocusFallsbackToWidget property

- Added kAccessibilityFocusFallsbackToWidget property to aura::Window.
- Default value of kAccessibilityFocusFallsbackToWidget is true.
- kAccessibilityFocusFallsbackToWidget is set to false for arc window.

BUG=661061
TEST=manually tested as described in the issue; User can navigate
     elements in Android window by using TalkBack.
     interactive_ui_tests:SpokenFeedbackTest

Review-Url: https://codereview.chromium.org/2530073002
Cr-Commit-Position: refs/heads/master@{#437469}
(cherry picked from commit 7f0cf5b355d668d98b8097e850eb33a9b86a727a)

Committed:
https://chromium.googlesource.com/chromium/src/+/23918093598100679745e8df43a4...
==========

[yawano, 2016-12-12 07:09:24]

Committed patchset #1 (id:1) manually as
23918093598100679745e8df43a435104a1cab09.