Use operator location for operator resolving problems

compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java

Index: compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java
diff --git a/compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java b/compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java
index 159d45d00179571c3b00dda5fe1e289b09ac4b92..a41a521a42550705bc14ba622e04a42be4e9a0a8 100644
--- a/compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java
+++ b/compiler/java/com/google/dart/compiler/ast/DartUnaryExpression.java
@@ -14,16 +14,17 @@ import com.google.dart.compiler.resolver.MethodNodeElement;
 public class DartUnaryExpression extends DartExpression {
 
   private final Token operator;
+  private final int operatorOffset;
   private DartExpression arg;
   private final boolean isPrefix;
   private MethodNodeElement element;
 
-  public DartUnaryExpression(Token operator, DartExpression arg, boolean isPrefix) {
+  public DartUnaryExpression(Token operator, int operatorOffset, DartExpression arg, boolean isPrefix) {
     assert operator.isUnaryOperator() || operator == Token.SUB;
-
-    this.isPrefix = isPrefix;
     this.operator = operator;
+    this.operatorOffset = operatorOffset;
     this.arg = becomeParentOf(arg);
+    this.isPrefix = isPrefix;
   }
 
   public DartExpression getArg() {
@@ -34,6 +35,10 @@ public class DartUnaryExpression extends DartExpression {
     return operator;
   }
 
+  public int getOperatorOffset() {
+    return operatorOffset;
+  }
+
   public boolean isPrefix() {
     return isPrefix;
   }