Revert r27592, some unit tests fail.

sdk/lib/_internal/compiler/implementation/ssa/builder.dart

Index: sdk/lib/_internal/compiler/implementation/ssa/builder.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/ssa/builder.dart	(revision 27592)
+++ sdk/lib/_internal/compiler/implementation/ssa/builder.dart	(working copy)
@@ -935,7 +935,7 @@
       sourceElementStack = <Element>[work.element],
       inliningStack = <InliningState>[],
       rti = builder.backend.rti,
-      super(work.resolutionTree, builder.compiler) {
+      super(work.resolutionTree) {
     localsHandler = new LocalsHandler(this);
   }
 
@@ -3601,14 +3601,6 @@
     }
   }
 
-  visitAssert(node) {
-    if (!compiler.enableUserAssertions) {
-      stack.add(graph.addConstantNull(compiler));
-      return;
-    }
-    visitStaticSend(node);
-  }
-
   visitStaticSend(Send node) {
     Selector selector = elements.getSelector(node);
     Element element = elements[node];
@@ -3622,6 +3614,11 @@
                                 argumentNodes: node.arguments);
       return;
     }
+    if (identical(element, compiler.assertMethod)
+        && !compiler.enableUserAssertions) {
+      stack.add(graph.addConstantNull(compiler));
+      return;
+    }
     compiler.ensure(!element.isGenerativeConstructor());
     if (element.isFunction()) {
       var inputs = <HInstruction>[];