Issue 3860. Check that setter/getter are both static or not static

compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java

Index: compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
diff --git a/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java b/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
index 4555fa21a0af048b88d824edeafb1ab6d5a1fb89..ba70eaa648c10740148719435415b75b77a89b9d 100644
--- a/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
+++ b/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
@@ -1717,6 +1717,11 @@ public class TypeAnalyzer implements DartCompilationPhase {
               typeError(parameterElement, TypeErrorCode.SETTER_TYPE_MUST_BE_ASSIGNABLE,
                   setterType.getElement().getName(), getterType.getElement().getName());
             }
+            
+            // getter and setter should have same "static" flag
+            if (modifiers.isStatic() != getterElement.getModifiers().isStatic()) {
+              onError(node.getName(), ResolverErrorCode.FIELD_GETTER_SETTER_SAME_STATIC);
+            }
           }
         }
       }