Fix back long press behavior

 Bug: 3486271

Change-Id: I49eb218670b4082b1fcf6daaab025ec7e0be6b8c
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 8c38e59..3c025d2 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -253,6 +253,12 @@
     }
 
     @Override
+    public boolean onKeyLongPress(int keyCode, KeyEvent event) {
+        return mController.onKeyLongPress(keyCode, event) ||
+            super.onKeyLongPress(keyCode, event);
+    }
+
+    @Override
     public boolean onKeyUp(int keyCode, KeyEvent event) {
         return mController.onKeyUp(keyCode, event) ||
             super.onKeyUp(keyCode, event);