Switching to IO scheduler and cleaning up cache method

app/src/main/java/acr/browser/lightning/constant/BookmarkPage.java

@@ -190,8 +190,8 @@ public final class BookmarkPage {
                 if (bookmarkUri != null) {
                     File faviconFile = FaviconModel.getFaviconCacheFile(mApp, bookmarkUri);
                     if (!faviconFile.exists()) {
-                        mFaviconModel.cacheFaviconForUrl(mFaviconModel.getDefaultBitmapForString(item.getTitle()), item.getUrl())
+                        Bitmap defaultFavicon = mFaviconModel.getDefaultBitmapForString(item.getTitle());
-                            .subscribe();
+                        mFaviconModel.cacheFaviconForUrl(defaultFavicon, item.getUrl()).subscribe();
                     }
 
                     faviconFileUrl = Constants.FILE + faviconFile;

app/src/main/java/acr/browser/lightning/fragment/BookmarksFragment.java

@@ -538,7 +538,7 @@ public class BookmarksFragment extends Fragment implements View.OnClickListener,
                 SubscriptionUtils.safeUnsubscribe(oldSubscription);
 
                 final Subscription faviconSubscription = mFaviconModel.faviconForUrl(url, web.getTitle())
-                    .subscribeOn(Schedulers.worker())
+                    .subscribeOn(Schedulers.io())
                     .observeOn(Schedulers.main())
                     .subscribe(new SingleOnSubscribe<Bitmap>() {
                         @Override

app/src/main/java/acr/browser/lightning/view/LightningChromeClient.java

@@ -73,12 +73,6 @@ public class LightningChromeClient extends WebChromeClient {
             return;
         }
 
-        Uri uri = Uri.parse(url);
-
-        if (uri.getHost() == null) {
-            return;
-        }
-
         mFaviconModel.cacheFaviconForUrl(icon, url)
             .subscribeOn(Schedulers.io())
             .subscribe();