Expose a low-end device mode override flags for non-android OSs as well

base/sys_info_android.cc

Index: base/sys_info_android.cc
diff --git a/base/sys_info_android.cc b/base/sys_info_android.cc
index 12da23b2878e329b54615857b4a91681bc0a1105..ab7c05d7c6f00686baac50e539256f95a728ff92 100644
--- a/base/sys_info_android.cc
+++ b/base/sys_info_android.cc
@@ -6,10 +6,13 @@
 
 #include <sys/system_properties.h>
 
+#include "base/android/sys_utils.h"
+#include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_piece.h"
 #include "base/strings/stringprintf.h"
+#include "base/sys_info_internal.h"
 
 namespace {
 
@@ -162,5 +165,14 @@ int SysInfo::DalvikHeapGrowthLimitMB() {
   return heap_growth_limit;
 }
 
+static base::LazyInstance<
+    base::internal::LazySysInfoValue<bool,
+        android::SysUtils::IsLowEndDeviceFromJni> >::Leaky
+    g_lazy_low_end_device = LAZY_INSTANCE_INITIALIZER;
+
+bool SysInfo::IsLowEndDevice() {
+  return g_lazy_low_end_device.Get().value();
+}
+
 
 }  // namespace base