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

base/android/sys_utils.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "base/android/sys_utils.h"
-
-#include "base/android/build_info.h"
-#include "base/sys_info.h"
-#include "jni/SysUtils_jni.h"
-
-namespace base {
-namespace android {
-
-bool SysUtils::Register(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-bool SysUtils::IsLowEndDeviceFromJni() {
-  JNIEnv* env = AttachCurrentThread();
-  return Java_SysUtils_isLowEndDevice(env);
-}
-
-bool SysUtils::IsLowEndDevice() {
-  static bool is_low_end = IsLowEndDeviceFromJni();
-  return is_low_end;
-}
-
-size_t SysUtils::AmountOfPhysicalMemoryKBFromJni() {
-  JNIEnv* env = AttachCurrentThread();
-  return static_cast<size_t>(Java_SysUtils_amountOfPhysicalMemoryKB(env));
-}
-
-size_t SysUtils::AmountOfPhysicalMemoryKB() {
-  static size_t amount_of_ram = AmountOfPhysicalMemoryKBFromJni();
-  return amount_of_ram;
-}
-
-SysUtils::SysUtils() { }
-
-}  // namespace android
-}  // namespace base