[Offline Pages on the NTP] Bypass the network interstitial

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

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java
index c5e4dd7919b8d84e6b832dda3d203b05b4a6cdc7..a7ab9fa216ba50df287c092da932bf254a057a83 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/OfflinePageUtils.java
@@ -71,6 +71,26 @@ public class OfflinePageUtils {
     }
 
     /**
+     * Returns the offline URL corresponding to the given online URL if it is available and the
+     * network is not connected, otherwise returns the given online URL. If an offline URL is
+     * returned, it is also marked as accessed.
+     * @param context Context associated with the activity.
+     * @param bridge The OfflinePageBridge.
+     * @param onlineUrl The online URL in question.
+     */
+    public static String getOfflineUrlIfNecessary(
+            Context context, OfflinePageBridge bridge, String onlineUrl) {
+        if (OfflinePageBridge.isEnabled() && bridge != null && !isConnected(context)) {
+            OfflinePageItem offlineItem = bridge.getPageByOnlineURL(onlineUrl);
+            if (offlineItem != null) {
+                bridge.markPageAccessed(offlineItem.getBookmarkId());
+                return offlineItem.getOfflineUrl();
+            }
+        }
+        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.