Simplified CPU/CpuFeatures a bit.

src/arm64/cpu-arm64.cc

Index: src/arm64/cpu-arm64.cc
diff --git a/src/arm64/cpu-arm64.cc b/src/arm64/cpu-arm64.cc
index b8899adb377c2e364d323ce145c64a63593b7422..bdc4a036b45857b20dae3c3347983a1e4016badc 100644
--- a/src/arm64/cpu-arm64.cc
+++ b/src/arm64/cpu-arm64.cc
@@ -49,16 +49,6 @@ unsigned CpuFeatures::dcache_line_size_ = 1;
 unsigned CpuFeatures::icache_line_size_ = 1;
 
 
-void CPU::SetUp() {
-  CpuFeatures::Probe();
-}
-
-
-bool CPU::SupportsCrankshaft() {
-  return true;
-}
-
-
 void CPU::FlushICache(void* address, size_t length) {
   if (length == 0) {
     return;
@@ -139,7 +129,7 @@ void CPU::FlushICache(void* address, size_t length) {
 }
 
 
-void CpuFeatures::Probe() {
+void CpuFeatures::Probe(bool serializer_enabled) {
   // Compute I and D cache line size. The cache type register holds
   // information about the caches.
   uint32_t cache_type_register = GetCacheType();