Ensure ResolverDrawerLayout is visible to accessibility services

Also removes the class name since it's not helpful to expose framework
internal class names to accessibility services that can't access them.

Bug: 18864087
Change-Id: If9b29d3929970bd893168444584a5dd1ba593c5b

core/java/com/android/internal/widget/ResolverDrawerLayout.java

@@ -127,6 +127,8 @@ public class ResolverDrawerLayout extends ViewGroup {
         final ViewConfiguration vc = ViewConfiguration.get(context);
         mTouchSlop = vc.getScaledTouchSlop();
         mMinFlingVelocity = vc.getScaledMinimumFlingVelocity();
+
+        setImportantForAccessibility(View.IMPORTANT_FOR_ACCESSIBILITY_YES);
     }
 
     public void setSmallCollapsed(boolean smallCollapsed) {
@@ -592,11 +594,6 @@ public class ResolverDrawerLayout extends ViewGroup {
         return false;
     }
 
-    @Override
-    public CharSequence getAccessibilityClassName() {
-        return ResolverDrawerLayout.class.getName();
-    }
-
     @Override
     public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
         super.onInitializeAccessibilityNodeInfo(info);