Add "SHOW ALL SAVED PAGES" button to offline error page

chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java b/chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java
index fed11c8825a486df65c836a4a7e993ee1b590359..7df13233b92888a418d64051bcaa03c2d7ae3cea 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tab/Tab.java
@@ -53,6 +53,7 @@ import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.dom_distiller.ReaderModeActivityDelegate;
 import org.chromium.chrome.browser.dom_distiller.ReaderModeManager;
 import org.chromium.chrome.browser.download.ChromeDownloadDelegate;
+import org.chromium.chrome.browser.enhancedbookmarks.EnhancedBookmarkUtils;
 import org.chromium.chrome.browser.fullscreen.FullscreenManager;
 import org.chromium.chrome.browser.help.HelpAndFeedback;
 import org.chromium.chrome.browser.infobar.InfoBarContainer;
@@ -2567,6 +2568,17 @@ public class Tab implements ViewGroup.OnHierarchyChangeListener,
     }
 
     /**
+     * Shows the list of offline pages. This should only be hit when offline pages feature is
+     * enabled.
+     */
+    @CalledByNative
+    public void showOfflinePages() {
+        // The offline pages filter view will be loaded by default when offline.
+        boolean shown = EnhancedBookmarkUtils.showEnhancedBookmarkIfEnabled(mActivity);
+        assert shown;
+    }
+
+    /**
      * Request that this tab receive focus. Currently, this function requests focus for the main
      * View (usually a ContentView).
      */