Adds support for --generic-method-syntax

tests/compiler/dart2js/backend_dart/dart_printer_test.dart

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart_printer_test;
 
 import 'dart:mirrors';
 import 'package:expect/expect.dart';
 import 'package:compiler/src/constants/values.dart';
 import 'package:compiler/src/dart_backend/backend_ast_nodes.dart';
@@ skipping 215 matching lines @@
     push(new Identifier("void"));
     push(<TypeAnnotation>[]); // prepare for popTypeAnnotation
   }
   handleQualified(Token period) {
     String last = pop(asName);
     String first = pop(asName);
     push(new Identifier('$first.$last'));
   }
   endSend(t) {
     List<Argument> arguments = pop();
+    pop(); // typeArguments
     if (arguments == null)
       return; // not a function call
     Expression selector = pop();
     push(new CallFunction(selector, arguments));
   }
   endThrowExpression(t, tt) {
     push(new Throw(pop()));
   }
   handleAssignmentExpression(Token token) {
     Expression right = pop();
@@ skipping 734 matching lines @@
   checkStatement("do while(x); while (y);");
   checkStatement("{do; while(x); while (y);}");
 
   checkStatement('switch(x) { case 1: case 2: return y; }');
   checkStatement('switch(x) { default: return y; }');
   checkStatement('switch(x) { case 1: x=y; default: return y; }');
   checkStatement('switch(x) { case 1: x=y; y=z; break; default: return y; }');
 
 }