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

runtime/vm/log.h

 // Copyright (c) 2015, 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_LOG_H_
 #define RUNTIME_VM_LOG_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/os.h"
@@ skipping 49 matching lines @@
   static Log noop_log_;
   LogPrinter printer_;
   intptr_t manual_flush_;
   MallocGrowableArray<char> buffer_;
 
   friend class LogBlock;
   friend class LogTestHelper;
   DISALLOW_COPY_AND_ASSIGN(Log);
 };
 
-
 // Causes all log messages to be buffered until destructor is called.
 // Can be nested.
 class LogBlock : public StackResource {
  public:
   LogBlock(Thread* thread, Log* log)
       : StackResource(thread), log_(log), cursor_(log->cursor()) {
     Initialize();
   }
 
   LogBlock()
       : StackResource(Thread::Current()),
         log_(Log::Current()),
         cursor_(Log::Current()->cursor()) {
     Initialize();
   }
 
   ~LogBlock();
 
  private:
   void Initialize();
 
   Log* const log_;
   const intptr_t cursor_;
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_LOG_H_