Offline Pages: Add Model Load Time UMA.

components/offline_pages/offline_page_model.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 COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_
 #define COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 13 matching lines @@
 #include "base/supports_user_data.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "components/offline_pages/offline_page_archiver.h"
 #include "components/offline_pages/offline_page_metadata_store.h"
 
 class GURL;
 namespace base {
 class SequencedTaskRunner;
 class Time;
 class TimeDelta;
+class TimeTicks;
 }
 
 namespace offline_pages {
 
 static const char* const kBookmarkNamespace = "bookmark";
 static const int64_t kInvalidOfflineId = 0;
 
 struct ClientId;
 
 struct OfflinePageItem;
@@ skipping 217 matching lines @@
   OfflinePageMetadataStore* GetStoreForTesting();
 
   bool is_loaded() const { return is_loaded_; }
 
  private:
   FRIEND_TEST_ALL_PREFIXES(OfflinePageModelTest, MarkPageForDeletion);
 
   typedef ScopedVector<OfflinePageArchiver> PendingArchivers;
 
   // Callback for ensuring archive directory is created.
-  void OnEnsureArchivesDirCreatedDone();
+  void OnEnsureArchivesDirCreatedDone(const base::TimeTicks& start_time);
 
   void GetAllPagesAfterLoadDone(
       const MultipleOfflinePageItemCallback& callback);
   void CheckPagesExistOfflineAfterLoadDone(
       const std::set<GURL>& urls,
       const CheckPagesExistOfflineCallback& callback);
   void GetOfflineIdsForClientIdWhenLoadDone(
       const ClientId& client_id,
       const MultipleOfflineIdCallback& callback) const;
   void GetPageByOfflineIdWhenLoadDone(
       int64_t offline_id,
       const SingleOfflinePageItemCallback& callback) const;
   void GetPagesByOnlineURLWhenLoadDone(
       const GURL& offline_url,
       const MultipleOfflinePageItemCallback& callback) const;
   void GetPageByOfflineURLWhenLoadDone(
       const GURL& offline_url,
       const SingleOfflinePageItemCallback& callback) const;
 
   // Callback for checking whether we have offline pages.
   void HasPagesAfterLoadDone(const std::string& name_space,
                              const HasPagesCallback& callback) const;
 
   // Callback for loading pages from the offline page metadata store.
-  void OnLoadDone(OfflinePageMetadataStore::LoadStatus load_status,
+  void OnLoadDone(const base::TimeTicks& start_time,
+                  OfflinePageMetadataStore::LoadStatus load_status,
                   const std::vector<OfflinePageItem>& offline_pages);
 
   // Steps for saving a page offline.
   void OnCreateArchiveDone(const GURL& requested_url,
                            int64_t offline_id,
                            const ClientId& client_id,
                            const base::Time& start_time,
                            const SavePageCallback& callback,
                            OfflinePageArchiver* archiver,
                            OfflinePageArchiver::ArchiverResult result,
@@ skipping 75 matching lines @@
   std::vector<base::Closure> delayed_tasks_;
 
   base::WeakPtrFactory<OfflinePageModel> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(OfflinePageModel);
 };
 
 }  // namespace offline_pages
 
 #endif  // COMPONENTS_OFFLINE_PAGES_OFFLINE_PAGE_MODEL_H_