[Offline Page]Enable share offline page from online tab

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

Index: chrome/android/java/src/org/chromium/chrome/browser/offlinepages/ClientId.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/ClientId.java b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/ClientId.java
index dbddbae2d21e8ef85c7868ec4fd677d40ca1c570..72f8380eaa94047f9d56cf3174aacd14ed8c6b7a 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/ClientId.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/offlinepages/ClientId.java
@@ -6,6 +6,8 @@ package org.chromium.chrome.browser.offlinepages;
 
 import org.chromium.components.bookmarks.BookmarkId;
 
+import java.util.UUID;
+
 /**
  * Object to hold a client identifier for an offline page.
  */
@@ -49,4 +51,14 @@ public class ClientId {
         if (id == null) return null;
         return new ClientId(OfflinePageBridge.BOOKMARK_NAMESPACE, id.toString());
     }
+
+    /**
+     * Create a client id for a tab when its contents need to be saved for sharing purposes.
+     * @param id The tab id to wrap.
+     * @return A {@link ClientId} that represents this TabId.
+     */
+    public static ClientId createClientIdForTabSharing() {
+        String uuid = UUID.randomUUID().toString();
+        return new ClientId(OfflinePageBridge.SHARE_NAMESPACE, uuid);
+    }
 }