Do not run Nearby on low end devices

This change checks if we are running on a low-end device before making
a call to Nearby.

BUG=736138

Change-Id: Ic3848725e752306c774a61a1cc9e26dd750e7a24
Reviewed-on: https://chromium-review.googlesource.com/567699Reviewed-by: Maria Khomenko <mariakhomenko@chromium.org>
Commit-Queue: Conley Owens <cco3@chromium.org>
Cr-Commit-Position: refs/heads/master@{#486032}

chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java

@@ -14,6 +14,7 @@ import android.os.AsyncTask;
 import android.os.Build;
 
 import org.chromium.base.ContextUtils;
+import org.chromium.base.SysUtils;
 import org.chromium.chrome.browser.ChromeFeatureList;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.UrlConstants;
@@ -97,7 +98,9 @@ public class PhysicalWeb {
         // In the case that the user has disabled our flag and restarted, this is a minimal code
         // path to disable our subscription to Nearby.
         if (!featureIsEnabled()) {
-            new NearbyBackgroundSubscription(NearbySubscription.UNSUBSCRIBE).run();
+            if (!SysUtils.isLowEndDevice()) {
+                new NearbyBackgroundSubscription(NearbySubscription.UNSUBSCRIBE).run();
+            }
             return;
         }
 
@@ -131,7 +134,8 @@ public class PhysicalWeb {
         return locationUtils.isSystemLocationSettingEnabled()
                 && locationUtils.hasAndroidLocationPermission()
                 && TemplateUrlService.getInstance().isDefaultSearchEngineGoogle()
-                && !Profile.getLastUsedProfile().isOffTheRecord();
+                && !Profile.getLastUsedProfile().isOffTheRecord()
+                && !SysUtils.isLowEndDevice();
     }
 
     /**