Initial support for native accessibility in ARC

chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h

Index: chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h
diff --git a/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h b/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h
index ad4abbd6de288d9799682095e7acc1f9f4291808..3db6e36ea4abaecc6fbbe54ff295c29fb0d54a31 100644
--- a/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h
+++ b/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.h
@@ -13,6 +13,7 @@
 namespace arc {
 
 class ArcBridgeService;
+class AXTreeSourceArc;
 
 // ArcAccessibilityHelperBridge is an instance to receive converted Android
 // accessibility events and info via mojo interface and dispatch them to chrome
@@ -30,12 +31,13 @@ class ArcAccessibilityHelperBridge
 
   // mojom::AccessibilityHelperHost overrides.
   void OnAccessibilityEvent(
-      mojom::AccessibilityEventType event_type,
-      mojom::AccessibilityNodeInfoDataPtr event_source) override;
+      mojom::AccessibilityEventDataPtr event_data) override;
 
  private:
   mojo::Binding<mojom::AccessibilityHelperHost> binding_;
 
+  std::unique_ptr<AXTreeSourceArc> tree_;
+
   DISALLOW_COPY_AND_ASSIGN(ArcAccessibilityHelperBridge);
 };