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

runtime/vm/code_observers.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_CODE_OBSERVERS_H_
 #define RUNTIME_VM_CODE_OBSERVERS_H_
 
+#include "vm/allocation.h"
 #include "vm/globals.h"
-#include "vm/allocation.h"
 
 namespace dart {
 
 #ifndef PRODUCT
 
 class Mutex;
 
 // Object observing code creation events. Used by external profilers and
 // debuggers to map address ranges to function names.
 class CodeObserver {
@@ skipping 11 matching lines @@
   virtual void Notify(const char* name,
                       uword base,
                       uword prologue_offset,
                       uword size,
                       bool optimized) = 0;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CodeObserver);
 };
 
-
 class CodeObservers : public AllStatic {
  public:
   static void InitOnce();
 
   static void Register(CodeObserver* observer);
 
   // Notify all active code observers about a newly created code object.
   static void NotifyAll(const char* name,
                         uword base,
                         uword prologue_offset,
@@ skipping 11 matching lines @@
   static Mutex* mutex_;
   static intptr_t observers_length_;
   static CodeObserver** observers_;
 };
 
 #endif  // !PRODUCT
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_CODE_OBSERVERS_H_