[Contextual Search] Check for ARIA widget roles.

Source/modules/accessibility/AXObject.h

Index: Source/modules/accessibility/AXObject.h
diff --git a/Source/modules/accessibility/AXObject.h b/Source/modules/accessibility/AXObject.h
index 8487a01e321c57f9c5d34794742496404e60067c..b32c9d5ad37eec08e515409a6ad64984c34727d7 100644
--- a/Source/modules/accessibility/AXObject.h
+++ b/Source/modules/accessibility/AXObject.h
@@ -615,6 +615,7 @@ public:
     static AccessibilityRole ariaRoleToWebCoreRole(const String&);
     static IntRect boundingBoxForQuads(LayoutObject*, const Vector<FloatQuad>&);
     static const AtomicString& roleName(AccessibilityRole);
+    static bool isInsideFocusableElementOrARIAWidget(const Node&);
 
 protected:
     AXID m_id;
@@ -652,6 +653,10 @@ protected:
     // Updates the cached attribute values. This may be recursive, so to prevent deadlocks,
     // functions called here may only search up the tree (ancestors), not down.
     void updateCachedAttributeValuesIfNeeded() const;
+
+private:
+    static bool includesARIAWidgetRole(const String&);
+    static bool hasInteractiveARIAAttribute(const Element&);
 };
 
 #define DEFINE_AX_OBJECT_TYPE_CASTS(thisType, predicate) \