Remove Undo Options from DeviceClassManager

chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java

Index: chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java b/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
index d1f37b61c7798ee9558f6e050fda73093c4da904..6ad59ae392d4e12504e48957eb9e5cc00e79489c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/device/DeviceClassManager.java
@@ -37,7 +37,6 @@ public class DeviceClassManager {
     private boolean mEnablePrerendering;
     private boolean mEnableToolbarSwipe;
     private boolean mEnableToolbarSwipeInDocumentMode;
-    private boolean mEnableUndo;
     private boolean mDisableDomainReliability;
 
     private final boolean mEnableFullscreen;
@@ -84,7 +83,6 @@ public class DeviceClassManager {
                 .hasSwitch(ChromeSwitches.ENABLE_ACCESSIBILITY_TAB_SWITCHER);
         mEnableFullscreen =
                 !commandLine.hasSwitch(ChromeSwitches.DISABLE_FULLSCREEN);
-        mEnableUndo = commandLine.hasSwitch(ChromeSwitches.ENABLE_HIGH_END_UI_UNDO);
         mEnableToolbarSwipeInDocumentMode =
                 commandLine.hasSwitch(ChromeSwitches.ENABLE_TOOLBAR_SWIPE_IN_DOCUMENT_MODE);
 
@@ -92,10 +90,6 @@ public class DeviceClassManager {
         if (mEnableAccessibilityLayout) {
             mEnableAnimations = false;
         }
-
-        if (SysUtils.isLowEndDevice() || mEnableAccessibilityLayout)  {
-            mEnableUndo = true;
-        }
     }
 
     /**
@@ -151,13 +145,6 @@ public class DeviceClassManager {
     }
 
     /**
-     * @return Whether or not undo is enabled.
-     */
-    public static boolean enableUndo(Context context) {
-        return getInstance().mEnableUndo || isAccessibilityModeEnabled(context);
-    }
-
-    /**
      * @return Whether or not to disable domain reliability.
      */
     public static boolean disableDomainReliability() {