[Offline pages] Refactor URL conversions from TabAndroid

chrome/browser/android/webapps/add_to_homescreen_data_fetcher.cc

 // 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.
 
 #include "chrome/browser/android/webapps/add_to_homescreen_data_fetcher.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "base/strings/string16.h"
 #include "base/task/cancelable_task_tracker.h"
-#include "chrome/browser/android/offline_pages/offline_page_model_factory.h"
+#include "chrome/browser/android/offline_pages/offline_page_utils.h"
 #include "chrome/browser/android/shortcut_helper.h"
 #include "chrome/browser/favicon/favicon_service_factory.h"
 #include "chrome/browser/manifest/manifest_icon_downloader.h"
 #include "chrome/browser/manifest/manifest_icon_selector.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/web_application_info.h"
 #include "components/dom_distiller/core/url_utils.h"
 #include "components/favicon/core/favicon_service.h"
-#include "components/offline_pages/offline_page_feature.h"
-#include "components/offline_pages/offline_page_item.h"
-#include "components/offline_pages/offline_page_model.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/common/frame_navigate_params.h"
 #include "content/public/common/manifest.h"
 #include "third_party/WebKit/public/platform/modules/screen_orientation/WebScreenOrientationLockType.h"
 #include "ui/gfx/codec/png_codec.h"
 #include "ui/gfx/favicon_size.h"
 #include "ui/gfx/screen.h"
@@ skipping 234 matching lines @@
     return;
 
   is_icon_saved_ = true;
   shortcut_icon_ = bitmap;
   shortcut_info_.is_icon_generated = is_generated;
   is_ready_ = true;
   weak_observer_->OnDataAvailable(shortcut_info_, shortcut_icon_);
 }
 
 GURL AddToHomescreenDataFetcher::GetShortcutUrl(const GURL& actual_url) {
-  GURL shortcut_url =
+  GURL original_url =
       dom_distiller::url_utils::GetOriginalUrlFromDistillerUrl(actual_url);
 
-  if (!offline_pages::IsOfflinePagesEnabled())
-    return shortcut_url;
+  // If URL points to an offline content, get original URL.
+  GURL online_url = offline_pages::OfflinePageUtils::GetOnlineURLForOfflineURL(
+      web_contents()->GetBrowserContext(), original_url);
+  if (online_url.is_valid())
+    return online_url;
 
-  Profile* profile =
-      Profile::FromBrowserContext(web_contents()->GetBrowserContext());
-
-  offline_pages::OfflinePageModel* offline_page_model =
-      offline_pages::OfflinePageModelFactory::GetForBrowserContext(profile);
-  const offline_pages::OfflinePageItem* offline_page =
-      offline_page_model->GetPageByOfflineURL(shortcut_url);
-  if (!offline_page)
-    return shortcut_url;
-
-  return offline_page->url;
+  return original_url;
 }