[Offline pages] Expose offline pages URL related methods in java code.

chrome/browser/android/offline_pages/offline_page_bridge.h

 // 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.
 
 #ifndef CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BRIDGE_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BRIDGE_H_
 
 #include <stdint.h>
 
 #include "base/android/jni_android.h"
@@ skipping 60 matching lines @@
   void DeletePages(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj,
       const base::android::JavaParamRef<jobject>& j_callback_obj,
       const base::android::JavaParamRef<jlongArray>& bookmark_ids_array);
 
   void CheckMetadataConsistency(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj);
 
+  base::android::ScopedJavaLocalRef<jstring> GetOfflineUrlForOnlineUrl(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj,
+      const base::android::JavaParamRef<jstring>& j_online_url);
+
+  jboolean IsOfflinePageUrl(
+      JNIEnv* env,
+      const base::android::JavaParamRef<jobject>& obj,
+      const base::android::JavaParamRef<jstring>& j_offline_url);
+
  private:
   void NotifyIfDoneLoading() const;
 
   base::android::ScopedJavaLocalRef<jobject> CreateOfflinePageItem(
       JNIEnv* env,
       const OfflinePageItem& offline_page) const;
 
   JavaObjectWeakGlobalRef weak_java_ref_;
   // Not owned.
+  content::BrowserContext* browser_context_;
+  // Not owned.
   OfflinePageModel* offline_page_model_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageBridge);
 };
 
 bool RegisterOfflinePageBridge(JNIEnv* env);
 
 }  // namespace android
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_BRIDGE_H_