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

runtime/vm/cpu_x64.cc

 // 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.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/cpu.h"
 #include "vm/cpu_x64.h"
 
 #include "vm/assembler.h"
 #include "vm/constants_x64.h"
 #include "vm/cpuinfo.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/object.h"
 
 namespace dart {
 
 DEFINE_FLAG(bool, use_sse41, true, "Use SSE 4.1 if available");
 
-
 void CPU::FlushICache(uword start, uword size) {
   // Nothing to be done here.
 }
 
-
 const char* CPU::Id() {
   return "x64";
 }
 
-
 bool HostCPUFeatures::sse2_supported_ = true;
 bool HostCPUFeatures::sse4_1_supported_ = false;
 const char* HostCPUFeatures::hardware_ = NULL;
 #if defined(DEBUG)
 bool HostCPUFeatures::initialized_ = false;
 #endif
 
 void HostCPUFeatures::InitOnce() {
   CpuInfo::InitOnce();
   hardware_ = CpuInfo::GetCpuModel();
   sse4_1_supported_ = CpuInfo::FieldContains(kCpuInfoFeatures, "sse4_1") ||
                       CpuInfo::FieldContains(kCpuInfoFeatures, "sse4.1");
 
 #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_X64