Re-land "Format all multitests"

tests/language/least_upper_bound_test.dart

 // Copyright (c) 2013, 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.
 
 // Test least upper bound through type checking of conditionals.
 
 class A {
   var a;
 }
+
 class B {
   var b;
 }
+
 class C extends B {
   var c;
 }
+
 class D extends B {
   var d;
 }
 
 class E<T> {
   T e;
 
   E(this.e);
 }
+
 class F<T> extends E<T> {
   T f;
 
-  F(T f) : this.f = f, super(f);
+  F(T f)
+      : this.f = f,
+        super(f);
 }
 
 void main() {
   testAB(new A(), new B());
   testBC(new C(), new C());
   testCD(new C(), new D());
   testEE(new F<C>(new C()), new F<C>(new C()));
   testEF(new F<C>(new C()), new F<C>(new C()));
 }
 
@@ skipping 54 matching lines @@
   F<C> r2 = false ? e : f; //# 28: ok
   try {
     A r3 = true ? e : f; //# 29: ok
     B r4 = false ? e : f; //# 30: ok
   } catch (e) {
     // Type error in checked mode.
   }
   var r5;
   r5 = (true ? e : f).e; //# 31: static type warning
   r5 = (false ? e : f).f; //# 32: static type warning
-}
+}