Issue 3753. Support for @deprecated annotation

compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java

Index: compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java b/compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java
index 5d2d93fdb71c54ee14b61d1ed43c97012f8b65f0..58cf94df102d1cb9c63786ee1be766a28310b18a 100644
--- a/compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java
+++ b/compiler/java/com/google/dart/compiler/resolver/ClassElementImplementation.java
@@ -7,6 +7,7 @@ package com.google.dart.compiler.resolver;
 import com.google.common.collect.Lists;
 import com.google.dart.compiler.ast.DartClass;
 import com.google.dart.compiler.ast.DartDeclaration;
+import com.google.dart.compiler.ast.DartMetadata;
 import com.google.dart.compiler.ast.DartParameterizedTypeNode;
 import com.google.dart.compiler.ast.DartStringLiteral;
 import com.google.dart.compiler.ast.Modifiers;
@@ -30,6 +31,7 @@ class ClassElementImplementation extends AbstractNodeElement implements ClassNod
   private final List<InterfaceType> interfaces = Lists.newArrayList();
   private final boolean isInterface;
   private final String nativeName;
+  private final DartMetadata metadata;
   private final Modifiers modifiers;
   private final AtomicReference<List<InterfaceType>> allSupertypes =
       new AtomicReference<List<InterfaceType>>();
@@ -60,11 +62,13 @@ class ClassElementImplementation extends AbstractNodeElement implements ClassNod
     this.library = library;
     if (node != null) {
       isInterface = node.isInterface();
+      metadata = node.getMetadata();
       modifiers = node.getModifiers();
       nameLocation = node.getName().getSourceInfo();
       declarationNameWithTypeParameter = new DartParameterizedTypeNode(node.getName(), node.getTypeParameters()).toSource();
     } else {
       isInterface = false;
+      metadata = DartMetadata.EMPTY;
       modifiers = Modifiers.NONE;
       nameLocation = SourceInfo.UNKNOWN;
       declarationNameWithTypeParameter = "";
@@ -157,6 +161,11 @@ class ClassElementImplementation extends AbstractNodeElement implements ClassNod
   }
 
   @Override
+  public DartMetadata getMetadata() {
+    return metadata;
+  }
+
+  @Override
   public Modifiers getModifiers() {
     return modifiers;
   }