The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/3cbcd14c48a113a4288f1ae70aca7a24b718317d

commit 3cbcd14c48a113a4288f1ae70aca7a24b718317d
Author: dmazzoni <dmazzoni@chromium.org>
Date: Wed Mar 09 23:17:34 2016

TalkBack needs to know supported HTML element types

TalkBack wants to access the element type navigation we added
in M50 ( http://crbug.com/583095 ), but we need to export the set of
supported element types so it knows which ones it can use.

BUG= 592901 , 583095 

Review URL: https://codereview.chromium.org/1767313002

Cr-Commit-Position: refs/heads/master@{#380255}

[modify] https://crrev.com/3cbcd14c48a113a4288f1ae70aca7a24b718317d/content/browser/accessibility/browser_accessibility_manager_android.cc
[modify] https://crrev.com/3cbcd14c48a113a4288f1ae70aca7a24b718317d/content/browser/accessibility/browser_accessibility_manager_android.h
[modify] https://crrev.com/3cbcd14c48a113a4288f1ae70aca7a24b718317d/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
[modify] https://crrev.com/3cbcd14c48a113a4288f1ae70aca7a24b718317d/content/public/android/java/src/org/chromium/content/browser/accessibility/KitKatBrowserAccessibilityManager.java

TalkBack really wants this change in M50 to support their next planned release.

Your change meets the bar and is auto-approved for M50 (branch: 2661)

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/d740d0e7262f2531b6ac5e24d5f47d8b55b4d737

commit d740d0e7262f2531b6ac5e24d5f47d8b55b4d737
Author: Dominic Mazzoni <dmazzoni@chromium.org>
Date: Thu Mar 10 21:01:08 2016

Merge to M50: TalkBack needs to know supported HTML element types

TalkBack wants to access the element type navigation we added
in M50 ( http://crbug.com/583095 ), but we need to export the set of
supported element types so it knows which ones it can use.

BUG= 592901 , 583095 

Review URL: https://codereview.chromium.org/1767313002

Cr-Commit-Position: refs/heads/master@{#380255}
(cherry picked from commit 3cbcd14c48a113a4288f1ae70aca7a24b718317d)

Review URL: https://codereview.chromium.org/1780313002 .

Cr-Commit-Position: refs/branch-heads/2661@{#184}
Cr-Branched-From: ef6f6ae5e4c96622286b563658d5cd62a6cf1197-refs/heads/master@{#378081}

[modify] https://crrev.com/d740d0e7262f2531b6ac5e24d5f47d8b55b4d737/content/browser/accessibility/browser_accessibility_manager_android.cc
[modify] https://crrev.com/d740d0e7262f2531b6ac5e24d5f47d8b55b4d737/content/browser/accessibility/browser_accessibility_manager_android.h
[modify] https://crrev.com/d740d0e7262f2531b6ac5e24d5f47d8b55b4d737/content/public/android/java/src/org/chromium/content/browser/accessibility/BrowserAccessibilityManager.java
[modify] https://crrev.com/d740d0e7262f2531b6ac5e24d5f47d8b55b4d737/content/public/android/java/src/org/chromium/content/browser/accessibility/KitKatBrowserAccessibilityManager.java