Persist offline page info in a navigation entry if needed

chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java
index e8bcc259c19af6381ce8bd56ae8a99634133bcb2..5a52c519349420db2d0afc226c66ee5b6cb3c29b 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/downloads/OfflinePageDownloadBridge.java
@@ -175,8 +175,9 @@ public class OfflinePageDownloadBridge implements DownloadServiceDelegate, Offli
 
         LoadUrlParams params = new LoadUrlParams(item.getUrl());
         Map<String, String> headers = new HashMap<String, String>();
-        headers.put("X-Chrome-offline", "reason=download id="
-                + Long.toString(nativeGetOfflineIdByGuid(mNativeOfflinePageDownloadBridge, guid)));
+        headers.put("X-Chrome-offline", "persist=1 reason=download id="
+                        + Long.toString(nativeGetOfflineIdByGuid(
+                                  mNativeOfflinePageDownloadBridge, guid)));
         params.setExtraHeaders(headers);
         AsyncTabCreationParams asyncParams = componentName == null
                 ? new AsyncTabCreationParams(params)