Bug 1177143 - Throttle HUD memory collection to 2 seconds. r=jryans

b2g/chrome/content/devtools/hud.js

@@ -685,7 +685,7 @@ let memoryWatcher = {
       });
     }
 
-    let timer = setTimeout(() => this.measure(target), 800);
+    let timer = setTimeout(() => this.measure(target), 2000);
     this._timers.set(target, timer);
   },