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

base/memory/discardable_memory_android.cc

Index: base/memory/discardable_memory_android.cc
diff --git a/base/memory/discardable_memory_android.cc b/base/memory/discardable_memory_android.cc
index 2004a360b0c980be7068012500b53ee98ec137a6..9c3b7ef97c090057584735b037d1b63426941f7d 100644
--- a/base/memory/discardable_memory_android.cc
+++ b/base/memory/discardable_memory_android.cc
@@ -9,7 +9,6 @@
 
 #include <limits>
 
-#include "base/android/sys_utils.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/file_util.h"
@@ -17,6 +16,7 @@
 #include "base/logging.h"
 #include "base/memory/discardable_memory_allocator_android.h"
 #include "base/memory/discardable_memory_emulated.h"
+#include "base/sys_utils.h"
 #include "third_party/ashmem/ashmem.h"
 
 namespace base {
@@ -37,7 +37,7 @@ struct DiscardableMemoryAllocatorWrapper {
   static size_t GetOptimalAshmemRegionSizeForAllocator() {
     // Note that this may do some I/O (without hitting the disk though) so it
     // should not be called on the critical path.
-    return base::android::SysUtils::AmountOfPhysicalMemoryKB() * 1024 / 8;
+    return base::SysUtils::AmountOfPhysicalMemoryKB() * 1024 / 8;
   }
 };