Revert "Add optional message to assert in Dart2js - continued"

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

Index: pkg/compiler/lib/src/resolution/semantic_visitor.dart
diff --git a/pkg/compiler/lib/src/resolution/semantic_visitor.dart b/pkg/compiler/lib/src/resolution/semantic_visitor.dart
index f87664bc1e9945b6ba0c9ff5dd27be7675d25673..bb9910184268ff74099b49cc6083270d492715f2 100644
--- a/pkg/compiler/lib/src/resolution/semantic_visitor.dart
+++ b/pkg/compiler/lib/src/resolution/semantic_visitor.dart
@@ -1300,6 +1300,32 @@ abstract class SemanticSendVisitor<R, A> {
       Node rhs,
       A arg);
 
+  /// Call to `assert` with [expression] as the condition.
+  ///
+  /// For instance:
+  ///
+  ///     m() { assert(expression); }
+  ///
+  R visitAssert(
+      Send node,
+      Node expression,
+      A arg);
+
+  /// Call to `assert` with the wrong number of [arguments].
+  ///
+  /// For instance:
+  ///
+  ///     m() { assert(); }
+  ///
+  /// or
+  ///
+  ///     m() { assert(expression1, expression2); }
+  ///
+  R errorInvalidAssert(
+      Send node,
+      NodeList arguments,
+      A arg);
+
   /// Binary expression `left operator right` where [operator] is a user
   /// definable operator. Binary expressions using operator `==` are handled
   /// by [visitEquals] and index operations `a[b]` are handled by [visitIndex].