[Android] Add a low-end device mode override flag

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index a1318ff9863d66674c412672ce7001182bb5eb70..545c050f33bbac02138a1924930563b7b1ea475a 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6966,6 +6966,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
         <message name="IDS_FLAGS_DISABLE_CLICK_DELAY_DESCRIPTION" desc="Description of the flag to disable the click delay.">
           Always send click events immediate upon a tap, even when it's part of a double-tap gesture.  This speeds up navigation and other tap actions by 300ms on most pages, but means links and buttons must be avoided when double tapping to zoom.
         </message>
+        <message name="IDS_FLAGS_LOW_END_DEVICE_MODE_DESCRIPTION" desc="Description of the flag to tweak low end device optimizations.">
+          Overrides low end device optimizations.
+        </message>
+        <message name="IDS_FLAGS_LOW_END_DEVICE_MODE_NAME" desc="Name of the flag to tweak low end device optimizations.">
+          Low end device mode.
+        </message>
       </if>
       <message name="IDS_FLAGS_ENABLE_TRANSLATE_NEW_UX_NAME" desc="Name of the flag to enable the new Translate UX.">
         Enable the new Translate UX.