Showing previews UI for Offline Previews

chrome/browser/android/offline_pages/offline_page_utils.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_UTILS_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_UTILS_H_
 
 #include <stdint.h>
 
 #include "base/callback.h"
@@ skipping 49 matching lines @@
   // returned pointer is owned by the web_contents and may be deleted by user
   // navigation, so it is unsafe to store a copy of the returned pointer.
   static const OfflinePageItem* GetOfflinePageFromWebContents(
       content::WebContents* web_contents);
 
   // Gets the offline header provided when loading the offline page for the
   // given web contents.
   static const OfflinePageHeader* GetOfflineHeaderFromWebContents(
       content::WebContents* web_contents);
 
+  // Returns whether the offline page corresponding to |web_contents| is part of
+  // previews/. If there is no offline page for |web_contents|, returns false.
+  static bool IsShowingOfflinePreview(content::WebContents* web_contents);
+
   // Gets an Android Tab ID from a tab containing |web_contents|. Returns false,
   // when tab is not available. Returns true otherwise and sets |tab_id| to the
   // ID of the tab.
   static bool GetTabId(content::WebContents* web_contents, int* tab_id);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_OFFLINE_PAGE_UTILS_H_