Add some missing APIs.

android.widget.Filter and android.webkit.MimeTypeMap are copied from
AOSP. Other new classes are only stub implementations.

src/api-impl/android/view/accessibility/AccessibilityManager.java

@@ -1,5 +1,16 @@
 package android.view.accessibility;
 
+import java.util.ArrayList;
+import java.util.List;
+
 public class AccessibilityManager {
 
+	public boolean isTouchExplorationEnabled() {return false;}
+
+	public boolean isEnabled() {return false;}
+
+	public List getEnabledAccessibilityServiceList(int feedbackTypeFlags) {
+		return new ArrayList<>();
+	}
+
 }