DBC: Enable CpuInfo test

runtime/vm/cpu_dbc.cc

Index: runtime/vm/cpu_dbc.cc
diff --git a/runtime/vm/cpu_dbc.cc b/runtime/vm/cpu_dbc.cc
index 8fcff5bb58f98d560cf4fbf70b095d7e8847a761..0e61fbd49769cc305662611b172624cf5a452efa 100644
--- a/runtime/vm/cpu_dbc.cc
+++ b/runtime/vm/cpu_dbc.cc
@@ -6,11 +6,12 @@
 #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.
 }
@@ -21,6 +22,31 @@ const char* CPU::Id() {
 }
 
 
+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