Initial support for native accessibility in ARC

chrome/browser/chromeos/BUILD.gn

Index: chrome/browser/chromeos/BUILD.gn
diff --git a/chrome/browser/chromeos/BUILD.gn b/chrome/browser/chromeos/BUILD.gn
index 4a6c5b79e63a21e09de6537a36769f181a7ac1da..498779afe3ca23385cf47fe7937309a8e8d75842 100644
--- a/chrome/browser/chromeos/BUILD.gn
+++ b/chrome/browser/chromeos/BUILD.gn
@@ -208,6 +208,8 @@ source_set("chromeos") {
     "app_mode/kiosk_session_plugin_handler_delegate.h",
     "app_mode/startup_app_launcher.cc",
     "app_mode/startup_app_launcher.h",
+    "arc/accessibility_helper/ax_tree_source_arc.cc",

[yawano, 2017/01/23 10:41:53]

Could you rename accessibility_helper to accessibility? I've renamed folder name
from "accessibility_helper" to "accessibility" in my CL
(https://crrev.com/2559663002) to make it consistent with
c/b/chromeos/accessibility.

arc/accessibility/ax_tree_source_arc.cc.

[David Tseng, 2017/01/23 20:56:00]

Done.

+    "arc/accessibility_helper/ax_tree_source_arc.h",
     "arc/arc_auth_context.cc",
     "arc/arc_auth_context.h",
     "arc/arc_auth_notification.cc",