/**
* Should be called when this object is no longer needed. Performs necessary listener tear down.
*/
public void destroy() {
mIsDestroyed = true;
AndroidSyncSettings.unregisterObserver(mContext, this);
mSignInManager.removeSignInStateObserver(this);
mSignInManager = null;
mFaviconHelper.destroy();
mFaviconHelper = null;
mRecentlyClosedBridge.destroy();
mRecentlyClosedBridge = null;
mForeignSessionHelper.destroy();
mForeignSessionHelper = null;
mUpdatedCallback = null;
mNewTabPagePrefs.destroy();
mNewTabPagePrefs = null;
InvalidationController.get(mContext).onRecentTabsPageClosed();
}
