Cosmetic changes to tests to make it easier to concatenate them.

src/string-builder.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/string-builder.h"
 
 namespace v8 {
 namespace internal {
 
 MaybeHandle<String> ReplacementStringBuilder::ToString() {
@@ skipping 89 matching lines @@
 
 
 void IncrementalStringBuilder::AppendString(Handle<String> string) {
   ShrinkCurrentPart();
   part_length_ = kInitialPartLength;  // Allocate conservatively.
   Extend();  // Attach current part and allocate new part.
   Handle<String> concat =
       factory()->NewConsString(accumulator(), string).ToHandleChecked();
   set_accumulator(concat);
 }
-}
-}  // namespace v8::internal
+}  // namespace internal
+}  // namespace v8