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

base/android/java/src/org/chromium/base/SysUtils.java

Index: base/android/java/src/org/chromium/base/SysUtils.java
diff --git a/base/android/java/src/org/chromium/base/SysUtils.java b/base/android/java/src/org/chromium/base/SysUtils.java
index a8fcdcb8169df1710447d0be0cfb2b0501f5a2c2..651b1718dc9166b0979e38bd350aa1e01d6f01d3 100644
--- a/base/android/java/src/org/chromium/base/SysUtils.java
+++ b/base/android/java/src/org/chromium/base/SysUtils.java
@@ -38,7 +38,6 @@ public class SysUtils {
      *
      * Note that this is CalledByNative for testing purpose only.
      */
-    @CalledByNative
     public static int amountOfPhysicalMemoryKB() {
         // Extract total memory RAM size by parsing /proc/meminfo, note that
         // this is exactly what the implementation of sysconf(_SC_PHYS_PAGES)
@@ -108,11 +107,13 @@ public class SysUtils {
 
     private static boolean detectLowEndDevice() {
         if (CommandLine.isInitialized()) {
-            if (CommandLine.getInstance().hasSwitch(BaseSwitches.ENABLE_LOW_END_DEVICE_MODE)) {
-                return true;
-            }
-            if (CommandLine.getInstance().hasSwitch(BaseSwitches.DISABLE_LOW_END_DEVICE_MODE)) {
-                return false;
+            if (CommandLine.getInstance().hasSwitch(BaseSwitches.LOW_END_DEVICE_MODE)) {
+                int mode = Integer.parseInt(CommandLine.getInstance().getSwitchValue(
+                  BaseSwitches.LOW_END_DEVICE_MODE));
+                if (mode == 1)
+                    return true;
+                if (mode == 0)
+                    return false;
             }
         }