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

runtime/vm/cpu_dbc.cc

 // Copyright (c) 2016, 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 "vm/globals.h"
 #if defined(TARGET_ARCH_DBC)
 
 #include "vm/cpu.h"
 #include "vm/cpu_dbc.h"
 
 #include "vm/cpuinfo.h"
 
 namespace dart {
 
 void CPU::FlushICache(uword start, uword size) {
   // Nothing to do.
 }
 
-
 const char* CPU::Id() {
   return "dbc";
 }
 
-
 const char* HostCPUFeatures::hardware_ = NULL;
 #if defined(DEBUG)
 bool HostCPUFeatures::initialized_ = false;
 #endif
 
 void HostCPUFeatures::InitOnce() {
   CpuInfo::InitOnce();
   hardware_ = CpuInfo::GetCpuModel();
 #if defined(DEBUG)
   initialized_ = true;
 #endif
 }
 
-
 void HostCPUFeatures::Cleanup() {
   DEBUG_ASSERT(initialized_);
 #if defined(DEBUG)
   initialized_ = false;
 #endif
   ASSERT(hardware_ != NULL);
   free(const_cast<char*>(hardware_));
   hardware_ = NULL;
   CpuInfo::Cleanup();
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_DBC