Uast: Add Uast visitor extensions instead of additional checkers

plugins/lint/lint-api/src/com/android/tools/klint/client/api/JavaLintLanguageExtension.java

@@ -17,7 +17,7 @@
 package com.android.tools.klint.client.api;
 
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.uast.UastAdditionalChecker;
+import org.jetbrains.uast.UastVisitorExtension;
 import org.jetbrains.uast.UastConverter;
 import org.jetbrains.uast.java.JavaUastLanguagePlugin;
 
@@ -32,7 +32,7 @@ public class JavaLintLanguageExtension extends LintLanguageExtension {
 
     @NotNull
     @Override
-    public List<UastAdditionalChecker> getAdditionalCheckers() {
-        return JavaUastLanguagePlugin.INSTANCE.getAdditionalCheckers();
+    public List<UastVisitorExtension> getVisitorExtensions() {
+        return JavaUastLanguagePlugin.INSTANCE.getVisitorExtensions();
     }
 }

plugins/lint/lint-api/src/com/android/tools/klint/client/api/LintDriver.java

@@ -44,14 +44,12 @@ import com.sun.istack.internal.NotNull;
 import org.jetbrains.uast.*;
 import org.jetbrains.uast.check.UastChecker;
 import org.jetbrains.uast.check.UastScanner;
-import org.jetbrains.uast.java.JavaUastCallKinds;
 import org.jetbrains.uast.visitor.UastVisitor;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.Opcodes;
 import org.objectweb.asm.tree.*;
 import org.w3c.dom.Attr;
 import org.w3c.dom.Element;
-import org.w3c.dom.Node;
 
 import java.io.File;
 import java.io.IOException;

plugins/lint/lint-api/src/com/android/tools/klint/detector/api/Detector.java

@@ -25,6 +25,7 @@ import org.jetbrains.uast.UClass;
 import org.jetbrains.uast.UElement;
 import org.jetbrains.uast.UFunction;
 import org.jetbrains.uast.check.UastAndroidContext;
+import org.jetbrains.uast.visitor.AbstractUastVisitor;
 import org.jetbrains.uast.visitor.UastVisitor;
 import org.objectweb.asm.tree.AbstractInsnNode;
 import org.objectweb.asm.tree.ClassNode;