Create SendStructure for unary and binary in resolution.

pkg/compiler/lib/src/resolution/send_resolver.dart

Index: pkg/compiler/lib/src/resolution/send_resolver.dart
diff --git a/pkg/compiler/lib/src/resolution/send_resolver.dart b/pkg/compiler/lib/src/resolution/send_resolver.dart
index 4608ecd10089d6e621e8506e3538810477c65936..80071d1449ef4844b612d32e5fe0d8ed3678fee4 100644
--- a/pkg/compiler/lib/src/resolution/send_resolver.dart
+++ b/pkg/compiler/lib/src/resolution/send_resolver.dart
@@ -222,10 +222,8 @@ abstract class SendResolverMixin {
         return internalError(node, "Unexpected is test.");
       } else if (operatorText == 'as') {
         return internalError(node, "Unexpected as cast.");
-        return new AsStructure(elements.getType(node.arguments.single));
       } else if (operatorText == '&&') {
         return internalError(node, "Unexpected logical and.");
-        return const LogicalAndStructure();
       } else if (operatorText == '||') {
         return internalError(node, "Unexpected logical or.");
       }
@@ -357,18 +355,17 @@ abstract class SendResolverMixin {
         }
         return new InvokeStructure(semantics, selector);
       case SendStructureKind.UNARY:
-        return new UnaryStructure(semantics, unaryOperator, selector);
+        return internalError(node, "Unexpected unary.");
       case SendStructureKind.NOT:
-        assert(selector == null);
-        return new NotStructure(semantics, selector);
+        return internalError(node, "Unexpected not.");
       case SendStructureKind.BINARY:
-        return new BinaryStructure(semantics, binaryOperator, selector);
+        return internalError(node, "Unexpected binary.");
       case SendStructureKind.INDEX:
-        return new IndexStructure(semantics, selector);
+        return internalError(node, "Unexpected index.");
       case SendStructureKind.EQ:
-        return new EqualsStructure(semantics, selector);
+        return internalError(node, "Unexpected equals.");
       case SendStructureKind.NOT_EQ:
-        return new NotEqualsStructure(semantics, selector);
+        return internalError(node, "Unexpected not equals.");
       case SendStructureKind.COMPOUND:
         Selector getterSelector =
             elements.getGetterSelectorInComplexSendSet(node);