Run Physical Web background subscription

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

Index: chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
index 12c3509ba3052a1dc2c74b80d34712bb4013f59c..7bfa0a089795132137adc08f5736fd116f2a0d71 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/physicalweb/PhysicalWeb.java
@@ -70,7 +70,7 @@ public class PhysicalWeb {
                     // resubscribed.
                     UrlManager.getInstance().clearNearbyUrls();
                 }
-            });
+            }).run();
         }
     }
 
@@ -84,7 +84,7 @@ public class PhysicalWeb {
                 // This isn't absolutely necessary, but it's nice to clean up all our shared prefs.
                 UrlManager.getInstance().clearAllUrls();
             }
-        });
+        }).run();
     }
 
     /**