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

runtime/vm/bitmap.h

 // 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.
 
 #ifndef RUNTIME_VM_BITMAP_H_
 #define RUNTIME_VM_BITMAP_H_
 
 #include "vm/allocation.h"
 #include "vm/isolate.h"
 #include "vm/zone.h"
 
 namespace dart {
 
 // Forward declarations.
 class RawStackMap;
 class StackMap;
 
-
 // BitmapBuilder is used to build a bitmap. The implementation is optimized
 // for a dense set of small bit maps without a fixed upper bound (e.g: a
 // pointer map description of a stack).
 class BitmapBuilder : public ZoneAllocated {
  public:
   BitmapBuilder()
       : length_(0),
         data_size_in_bytes_(kInitialSizeInBytes),
         data_(Thread::Current()->zone()->Alloc<uint8_t>(kInitialSizeInBytes)) {
     memset(data_, 0, kInitialSizeInBytes);
@@ skipping 43 matching lines @@
   // (up to length_) is allowed and they are assumed to be false.
   intptr_t data_size_in_bytes_;
   uint8_t* data_;
 
   DISALLOW_COPY_AND_ASSIGN(BitmapBuilder);
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_BITMAP_H_