VM: Re-format to use at most one newline between functions

runtime/vm/boolfield_test.cc

 // Copyright (c) 2012, 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.
 
 #include "platform/assert.h"
+
 #include "vm/boolfield.h"
 #include "vm/unit_test.h"
 
 namespace dart {
 
 VM_UNIT_TEST_CASE(BoolField) {
   class TestBoolField : public BoolField<1> {};
   EXPECT(TestBoolField::decode(2));
   EXPECT(!TestBoolField::decode(1));
   EXPECT_EQ(2U, TestBoolField::encode(true));
   EXPECT_EQ(0U, TestBoolField::encode(false));
   EXPECT_EQ(3U, TestBoolField::update(true, 1));
   EXPECT_EQ(1U, TestBoolField::update(false, 1));
 }
 
 }  // namespace dart