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 904390662062e405fc8eae710e0cb4441c175a69..c7d139100f14cccf4718dde73dffb412eec5dd5f 100644
--- a/base/memory/discardable_memory_android.cc
+++ b/base/memory/discardable_memory_android.cc
@@ -4,7 +4,6 @@
 
 #include "base/memory/discardable_memory.h"
 
-#include "base/android/sys_utils.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/lazy_instance.h"
@@ -13,6 +12,7 @@
 #include "base/memory/discardable_memory_ashmem_allocator.h"
 #include "base/memory/discardable_memory_emulated.h"
 #include "base/memory/discardable_memory_malloc.h"
+#include "base/sys_utils.h"
 
 namespace base {
 namespace {
@@ -39,7 +39,7 @@ struct AshmemGlobalContext {
   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;
   }
 };