Move cache line size calculation directly into CPU::FlushICache.

src/arm64/cpu-arm64.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_ARM64_CPU_ARM64_H_
 #define V8_ARM64_CPU_ARM64_H_
 
 #include <stdio.h>
 #include "serialize.h"
 #include "cpu.h"
@@ skipping 43 matching lines @@
   static bool VerifyCrossCompiling(CpuFeature f) {
     // There are no optional features for ARM64.
     USE(f);
     ASSERT(cross_compile_ == 0);
     return true;
   }
 
   static bool SupportsCrankshaft() { return true; }
 
  private:
-  // Return the content of the cache type register.
-  static uint32_t GetCacheType();
-
-  // I and D cache line size in bytes.
-  static unsigned icache_line_size_;
-  static unsigned dcache_line_size_;
-
 #ifdef DEBUG
   static bool initialized_;
 #endif
 
   // This isn't used (and is always 0), but it is required by V8.
-  static unsigned found_by_runtime_probing_only_;
-
   static unsigned cross_compile_;
 
   friend class PlatformFeatureScope;
   DISALLOW_COPY_AND_ASSIGN(CpuFeatures);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM64_CPU_ARM64_H_