More co19 clean up.

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

Index: compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java b/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
index 433f8f940a298497ed042cea1745a2018ebd6dea..f0dc599147742f5e557a13f3b3f4d7eff4ae25f8 100644
--- a/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
+++ b/compiler/java/com/google/dart/compiler/resolver/CompileTimeConstantAnalyzer.java
@@ -15,6 +15,7 @@ import com.google.dart.compiler.ast.DartBinaryExpression;
 import com.google.dart.compiler.ast.DartBooleanLiteral;
 import com.google.dart.compiler.ast.DartCase;
 import com.google.dart.compiler.ast.DartClass;
+import com.google.dart.compiler.ast.DartConditional;
 import com.google.dart.compiler.ast.DartDeclaration;
 import com.google.dart.compiler.ast.DartDoubleLiteral;
 import com.google.dart.compiler.ast.DartExpression;
@@ -279,9 +280,8 @@ public class CompileTimeConstantAnalyzer {
           checkMathExpression(x, lhs, rhs, lhsType, rhsType);
           break;
         case TRUNC:
-          reportExceptionIfZeroLiteral(x, rhs);
-          // pass-through
         case MOD:
+          reportExceptionIfZeroLiteral(x, rhs);
           if (checkNumber(lhs, lhsType) && checkNumber(rhs, rhsType)) {
             rememberInferredType(x, intType);
           }
@@ -340,6 +340,12 @@ public class CompileTimeConstantAnalyzer {
       rememberInferredType(x, doubleType);
       return null;
     }
+    
+    @Override
+    public Void visitConditional(DartConditional node) {
+      expectedConstant(node);
+      return null;
+    }
 
     @Override
     public Void visitField(DartField x) {