Issue 8426. Ignore depecated warnings in DartCompilerListenerTest.

compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java

Index: compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java b/compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java
index ec97e7a90f5452d869fb4fe6b9a3bf13082e981c..c6fbf3909860443b27776b9d5e6788ffaaff0d68 100644
--- a/compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java
+++ b/compiler/javatests/com/google/dart/compiler/DartCompilerListenerTest.java
@@ -4,6 +4,8 @@
 
 package com.google.dart.compiler;
 
+import com.google.dart.compiler.resolver.TypeErrorCode;
+
 /**
  * Testing implementation of {@link DartCompilerListener}.
  */
@@ -49,6 +51,11 @@ public class DartCompilerListenerTest extends DartCompilerListener.Empty {
 
   @Override
   public void onError(DartCompilationError event) {
+    // ignore deprecated
+    if (event.getErrorCode() == TypeErrorCode.DEPRECATED_ELEMENT) {
+      return;
+    }
+    // validate
     String reportedSrcName = (event.getSource() != null)
         ? event.getSource().getName()
         : null;