[Offline pages] Making sure http:// scheme is stripped from OIB

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 package org.chromium.chrome.browser.offlinepages;
 
 import android.content.Context;
 import android.os.Environment;
 
 import org.chromium.base.Log;
@@ skipping 121 matching lines @@
         if (newUrl.equals(tab.getUrl()) && isConnected()) {
             Log.i(TAG, "Refreshing to the online version of an offline page, since we are online");
             LoadUrlParams params =
                     new LoadUrlParams(tab.getOfflinePageOriginalUrl(), PageTransition.RELOAD);
             params.setShouldReplaceCurrentEntry(true);
             tab.loadUrl(params);
         }
     }
 
     /**
+     * Strips scheme from the original URL of the offline page. This is meant to be used by UI.
+     * @param onlineUrl an online URL to from which the scheme is removed
+     * @return onlineUrl without the scheme
+     */
+    public static String stripSchemeFromOnlineUrl(String onlineUrl) {
+        // Offline pages are only saved for https:// and http:// schemes.
+        if (onlineUrl.startsWith("https://")) {
+            return onlineUrl.substring(8);
+        } else if (onlineUrl.startsWith("http://")) {
+            return onlineUrl.substring(7);
+        } else {
+            return onlineUrl;
+        }
+    }
+
+    /**
      * Shows the snackbar for the current tab to provide offline specific information if needed.
      * @param activity The activity owning the tab.
      * @param tab The current tab.
      */
     public static void showOfflineSnackbarIfNecessary(ChromeActivity activity, Tab tab) {
         showOfflineSnackbarIfNecessary(activity, tab, null);
     }
 
     /**
      * Shows the snackbar for the current tab to provide offline specific information if needed.
@@ skipping 76 matching lines @@
                 foundTab.loadUrl(params);
             }
 
             @Override
             public void onDismissNoAction(Object actionData) {
                 RecordUserAction.record("OfflinePages.ReloadButtonNotClicked");
             }
         };
     }
 }