Last_n: Minor follow-up fixes post user interaction triggers.

chrome/browser/android/offline_pages/recent_tab_helper.h

 // Copyright 2016 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_RECENT_TAB_HELPER_H_
 #define CHROME_BROWSER_ANDROID_OFFLINE_PAGES_RECENT_TAB_HELPER_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/memory/weak_ptr.h"
 #include "components/offline_pages/core/downloads/download_ui_item.h"
 #include "components/offline_pages/core/offline_page_model.h"
 #include "components/offline_pages/core/snapshot_controller.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "url/gurl.h"
 
 namespace content {
 class NavigationHandle;
 }
 
 namespace offline_pages {
 
-using PageQuality = SnapshotController::PageQuality;
-
 // Attaches to every WebContent shown in a tab. Waits until the WebContent is
 // loaded to proper degree and then makes a snapshot of the page. Removes the
 // oldest snapshot in the 'ring buffer'. As a result, there is always up to N
 // snapshots of recent pages on the device.
 class RecentTabHelper
     : public content::WebContentsObserver,
       public content::WebContentsUserData<RecentTabHelper>,
       public SnapshotController::Client {
  public:
   ~RecentTabHelper() override;
@@ skipping 56 matching lines @@
     // the request if the capture of the current page was not possible (e.g.
     // the user navigated to another page before current one was loaded).
     // 0 if this is a "last_n" info.
     int64_t request_id = OfflinePageModel::kInvalidOfflineId;
 
     // True if there was at least one snapshot successfully completed.
     bool page_snapshot_completed = false;
 
     // Expected snapshot quality should the saving succeed. This value is only
     // valid if |page_snapshot_completed| is true.
-    PageQuality expected_page_quality = PageQuality::POOR;
+    SnapshotController::PageQuality expected_page_quality =
+        SnapshotController::PageQuality::POOR;
   };
 
   explicit RecentTabHelper(content::WebContents* web_contents);
   friend class content::WebContentsUserData<RecentTabHelper>;
 
   bool EnsureInitialized();
   void ContinueSnapshotWithIdsToPurge(SnapshotProgressInfo* snapshot_info,
                                       const std::vector<int64_t>& page_ids);
   void ContinueSnapshotAfterPurge(SnapshotProgressInfo* snapshot_info,
                                   OfflinePageModel::DeletePageResult result);
@@ skipping 35 matching lines @@
   std::unique_ptr<SnapshotController> snapshot_controller_;
 
   std::unique_ptr<Delegate> delegate_;
 
   // Set at each navigation to control if last_n should save snapshots of the
   // current page being loaded.
   bool last_n_listen_to_tab_hidden_ = false;
 
   // Track the page quality status of the last saved snapshot for the current
   // page. It is generally reset upon new navigations.
-  PageQuality last_n_latest_saved_quality_ = PageQuality::POOR;
+  SnapshotController::PageQuality last_n_latest_saved_quality_ =
+      SnapshotController::PageQuality::POOR;
 
   base::WeakPtrFactory<RecentTabHelper> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RecentTabHelper);
 };
 
 }  // namespace offline_pages
 
 #endif  // CHROME_BROWSER_ANDROID_OFFLINE_PAGES_RECENT_TAB_HELPER_H_