Bug 958250 - Improve lazy loading in TelemetryPing.js r=nfroyd

toolkit/components/telemetry/TelemetryPing.js

@@ -14,10 +14,7 @@ Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 #ifndef MOZ_WIDGET_GONK
 Cu.import("resource://gre/modules/LightweightThemeManager.jsm");
 #endif
-Cu.import("resource://gre/modules/ctypes.jsm");
 Cu.import("resource://gre/modules/ThirdPartyCookieProbe.jsm");
-Cu.import("resource://gre/modules/TelemetryFile.jsm");
-Cu.import("resource://gre/modules/UITelemetry.jsm");
 
 // When modifying the payload in incompatible ways, please bump this version number
 const PAYLOAD_VERSION = 1;
@@ -67,6 +64,8 @@ XPCOMUtils.defineLazyModuleGetter(this, "UpdateChannel",
                                   "resource://gre/modules/UpdateChannel.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "AddonManagerPrivate",
                                   "resource://gre/modules/AddonManager.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "TelemetryFile",
+                                  "resource://gre/modules/TelemetryFile.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "UITelemetry",
                                   "resource://gre/modules/UITelemetry.jsm");
 
@@ -93,6 +92,7 @@ let processInfo = {
   },
   getCounters_Windows: function() {
     if (!this._initialized){
+      Cu.import("resource://gre/modules/ctypes.jsm");
       this._IO_COUNTERS = new ctypes.StructType("IO_COUNTERS", [
         {'readOps': ctypes.unsigned_long_long},
         {'writeOps': ctypes.unsigned_long_long},