Initial support for accessibility actions on ARC.

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

Index: chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc
diff --git a/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc b/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc
index cbe7c699d3d325173048d73859f7d13a7566b8ac..6eb7b7d5bd4e98229f64897e0497131e50b5de80 100644
--- a/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc
+++ b/chrome/browser/chromeos/arc/accessibility/arc_accessibility_helper_bridge.cc
@@ -95,7 +95,7 @@ void ArcAccessibilityHelperBridge::OnInstanceReady() {
           chromeos::switches::kEnableChromeVoxArcSupport)) {
     instance->SetFilter(arc::mojom::AccessibilityFilterType::ALL);
     if (!tree_source_) {
-      tree_source_.reset(new AXTreeSourceArc());
+      tree_source_.reset(new AXTreeSourceArc(tree_id()));
       focus_stealer_.reset(new FocusStealer(tree_source_->tree_id()));
       exo::WMHelper::GetInstance()->AddActivationObserver(this);
     }
@@ -159,4 +159,19 @@ void ArcAccessibilityHelperBridge::OnWindowActivated(
   }
 }
 
+void ArcAccessibilityHelperBridge::PerformAction(const ui::AXActionData& data) {
+  arc::mojom::AccessibilityActionType mojo_action;
+  switch (data.action) {
+    case ui::AX_ACTION_DO_DEFAULT:
+      mojo_action = arc::mojom::AccessibilityActionType::CLICK;
+      break;
+    default:
+      return;
+  }
+
+  auto* instance = ARC_GET_INSTANCE_FOR_METHOD(
+      arc_bridge_service()->accessibility_helper(), PerformAction);
+  instance->PerformAction(data.target_node_id, mojo_action);
+}
+
 }  // namespace arc