Refactor the offline page storage to include client namespace and id.

components/offline_pages/offline_page_model_unittest.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 "components/offline_pages/offline_page_model.h"
 
 #include <stdint.h>
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/run_loop.h"
 #include "base/single_thread_task_runner.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/test/test_mock_time_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "components/bookmarks/browser/bookmark_client.h"
 #include "components/bookmarks/browser/bookmark_model.h"
 #include "components/bookmarks/browser/bookmark_node.h"
 #include "components/bookmarks/browser/bookmark_storage.h"
 #include "components/bookmarks/browser/bookmark_undo_delegate.h"
 #include "components/bookmarks/browser/bookmark_undo_provider.h"
 #include "components/bookmarks/test/test_bookmark_client.h"
 #include "components/offline_pages/offline_page_item.h"
 #include "components/offline_pages/offline_page_test_archiver.h"
 #include "components/offline_pages/offline_page_test_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using SavePageResult = offline_pages::OfflinePageModel::SavePageResult;
 using DeletePageResult = offline_pages::OfflinePageModel::DeletePageResult;
 
 namespace offline_pages {
 
 namespace {
 const GURL kTestUrl("http://example.com");
-const int64_t kTestPageBookmarkId1 = 1234LL;
+const ClientId kTestPageBookmarkId1(BOOKMARK_NAMESPACE, "1234");
 const GURL kTestUrl2("http://other.page.com");
 const GURL kTestUrl3("http://test.xyz");
 const GURL kFileUrl("file:///foo");
-const int64_t kTestPageBookmarkId2 = 5678LL;
-const int64_t kTestPageBookmarkId3 = 42LL;
+const ClientId kTestPageBookmarkId2(BOOKMARK_NAMESPACE, "5678");
+const ClientId kTestPageBookmarkId3(BOOKMARK_NAMESPACE, "42");
 const int64_t kTestFileSize = 876543LL;
 
 }  // namespace
 
 class OfflinePageModelTest
     : public testing::Test,
       public OfflinePageModel::Observer,
       public OfflinePageTestArchiver::Observer,
       public base::SupportsWeakPtr<OfflinePageModelTest> {
  public:
   OfflinePageModelTest();
   ~OfflinePageModelTest() override;
 
   void SetUp() override;
   void TearDown() override;
 
   // OfflinePageModel::Observer implementation.
   void OfflinePageModelLoaded(OfflinePageModel* model) override;
   void OfflinePageModelChanged(OfflinePageModel* model) override;
-  void OfflinePageDeleted(int64_t bookmark_id) override;
+  void OfflinePageDeleted(int64_t offline_id) override;
 
   // OfflinePageTestArchiver::Observer implementation.
   void SetLastPathCreatedByArchiver(const base::FilePath& file_path) override;
 
   // OfflinePageModel callbacks.
-  void OnSavePageDone(SavePageResult result);
+  void OnSavePageDone(SavePageResult result, int64_t offline_id);
   void OnDeletePageDone(DeletePageResult result);
   void OnClearAllDone();
 
   // OfflinePageMetadataStore callbacks.
   void OnStoreUpdateDone(bool /* success */);
 
   scoped_ptr<OfflinePageTestArchiver> BuildArchiver(
       const GURL& url,
       OfflinePageArchiver::ArchiverResult result);
   scoped_ptr<OfflinePageMetadataStore> BuildStore();
   scoped_ptr<OfflinePageModel> BuildModel(
       scoped_ptr<OfflinePageMetadataStore> store);
   void ResetModel();
 
   // Utility methods.
   // Runs until all of the tasks that are not delayed are gone from the task
   // queue.
   void PumpLoop();
   // Fast-forwards virtual time by |delta|, causing tasks with a remaining
   // delay less than or equal to |delta| to be executed.
   void FastForwardBy(base::TimeDelta delta);
   void ResetResults();
 
   OfflinePageTestStore* GetStore();
 
-  void SavePage(const GURL& url, int64_t bookmark_id);
+  void SavePage(const GURL& url, ClientId client_id);
   void SavePageWithArchiverResult(const GURL& url,
-                                  int64_t bookmark_id,
+                                  ClientId client_id,
                                   OfflinePageArchiver::ArchiverResult result);
 
   OfflinePageModel* model() { return model_.get(); }
 
+  int64_t last_save_offline_id() const { return last_save_offline_id_; }
+
   SavePageResult last_save_result() const {
     return last_save_result_;
   }
 
   DeletePageResult last_delete_result() const {
     return last_delete_result_;
   }
 
-  int64_t last_deleted_bookmark_id() const { return last_deleted_bookmark_id_; }
+  int64_t last_deleted_offline_id() const { return last_deleted_offline_id_; }
 
   const base::FilePath& last_archiver_path() { return last_archiver_path_; }
 
  private:
   scoped_refptr<base::TestMockTimeTaskRunner> task_runner_;
   base::ThreadTaskRunnerHandle task_runner_handle_;
   base::ScopedTempDir temp_dir_;
 
   scoped_ptr<OfflinePageModel> model_;
   SavePageResult last_save_result_;
+  int64_t last_save_offline_id_;
   DeletePageResult last_delete_result_;
   base::FilePath last_archiver_path_;
-  int64_t last_deleted_bookmark_id_;
+  int64_t last_deleted_offline_id_;
 };
 
 OfflinePageModelTest::OfflinePageModelTest()
     : task_runner_(new base::TestMockTimeTaskRunner),
       task_runner_handle_(task_runner_),
       last_save_result_(SavePageResult::CANCELLED),
+      last_save_offline_id_(-1),
       last_delete_result_(DeletePageResult::CANCELLED),
-      last_deleted_bookmark_id_(-1) {
-}
+      last_deleted_offline_id_(-1) {}
 
 OfflinePageModelTest::~OfflinePageModelTest() {
 }
 
 void OfflinePageModelTest::SetUp() {
   ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
   model_ = BuildModel(BuildStore());
   model_->AddObserver(this);
   PumpLoop();
 }
 
 void OfflinePageModelTest::TearDown() {
   model_->RemoveObserver(this);
   model_.reset();
   PumpLoop();
 }
 
 void OfflinePageModelTest::OfflinePageModelLoaded(OfflinePageModel* model) {
   ASSERT_EQ(model_.get(), model);
 }
 
 void OfflinePageModelTest::OfflinePageModelChanged(OfflinePageModel* model) {
   ASSERT_EQ(model_.get(), model);
 }
 
-void OfflinePageModelTest::OfflinePageDeleted(int64_t bookmark_id) {
-  last_deleted_bookmark_id_ = bookmark_id;
+void OfflinePageModelTest::OfflinePageDeleted(int64_t offline_id) {
+  last_deleted_offline_id_ = offline_id;
 }
 
 void OfflinePageModelTest::SetLastPathCreatedByArchiver(
     const base::FilePath& file_path) {
   last_archiver_path_ = file_path;
 }
 
 void OfflinePageModelTest::OnSavePageDone(
-    OfflinePageModel::SavePageResult result) {
+    OfflinePageModel::SavePageResult result,
+    int64_t offline_id) {
   last_save_result_ = result;
+  last_save_offline_id_ = offline_id;
 }
 
 void OfflinePageModelTest::OnDeletePageDone(DeletePageResult result) {
   last_delete_result_ = result;
 }
 
 void OfflinePageModelTest::OnClearAllDone() {
   PumpLoop();
 }
 
@@ skipping 39 matching lines @@
 void OfflinePageModelTest::ResetResults() {
   last_save_result_ = SavePageResult::CANCELLED;
   last_delete_result_ = DeletePageResult::CANCELLED;
   last_archiver_path_.clear();
 }
 
 OfflinePageTestStore* OfflinePageModelTest::GetStore() {
   return static_cast<OfflinePageTestStore*>(model()->GetStoreForTesting());
 }
 
-void OfflinePageModelTest::SavePage(const GURL& url, int64_t bookmark_id) {
+void OfflinePageModelTest::SavePage(const GURL& url, ClientId client_id) {
   SavePageWithArchiverResult(
-      url,
-      bookmark_id,
+      url, client_id,
       OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED);
 }
 
 void OfflinePageModelTest::SavePageWithArchiverResult(
     const GURL& url,
-    int64_t bookmark_id,
+    ClientId client_id,
     OfflinePageArchiver::ArchiverResult result) {
   scoped_ptr<OfflinePageTestArchiver> archiver(BuildArchiver(url, result));
   model()->SavePage(
-      url, bookmark_id, std::move(archiver),
+      url, client_id, std::move(archiver),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   PumpLoop();
 }
 
 TEST_F(OfflinePageModelTest, SavePageSuccessful) {
   EXPECT_FALSE(model()->HasOfflinePages());
   SavePage(kTestUrl, kTestPageBookmarkId1);
   EXPECT_TRUE(model()->HasOfflinePages());
 
   OfflinePageTestStore* store = GetStore();
   EXPECT_EQ(kTestUrl, store->last_saved_page().url);
-  EXPECT_EQ(kTestPageBookmarkId1, store->last_saved_page().bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1.id, store->last_saved_page().client_id.id);
+  EXPECT_EQ(kTestPageBookmarkId1.name_space,
+            store->last_saved_page().client_id.name_space);
   // Save last_archiver_path since it will be referred to later.
   base::FilePath archiver_path = last_archiver_path();
   EXPECT_EQ(archiver_path, store->last_saved_page().file_path);
   EXPECT_EQ(kTestFileSize, store->last_saved_page().file_size);
   EXPECT_EQ(SavePageResult::SUCCESS, last_save_result());
   ResetResults();
 
   const std::vector<OfflinePageItem>& offline_pages = model()->GetAllPages();
 
   EXPECT_EQ(1UL, offline_pages.size());
   EXPECT_EQ(kTestUrl, offline_pages[0].url);
-  EXPECT_EQ(kTestPageBookmarkId1, offline_pages[0].bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1.id, offline_pages[0].client_id.id);
+  EXPECT_EQ(kTestPageBookmarkId1.name_space,
+            offline_pages[0].client_id.name_space);
   EXPECT_EQ(archiver_path, offline_pages[0].file_path);
   EXPECT_EQ(kTestFileSize, offline_pages[0].file_size);
   EXPECT_EQ(0, offline_pages[0].access_count);
   EXPECT_EQ(0, offline_pages[0].flags);
 }
 
 TEST_F(OfflinePageModelTest, SavePageOfflineArchiverCancelled) {
   SavePageWithArchiverResult(
       kTestUrl,
       kTestPageBookmarkId1,
@@ skipping 64 matching lines @@
       kTestUrl, kTestPageBookmarkId1, std::move(archiver),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   EXPECT_TRUE(archiver_ptr->create_archive_called());
 
   // Request to save another page.
   SavePage(kTestUrl2, kTestPageBookmarkId2);
 
   OfflinePageTestStore* store = GetStore();
 
   EXPECT_EQ(kTestUrl2, store->last_saved_page().url);
-  EXPECT_EQ(kTestPageBookmarkId2, store->last_saved_page().bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId2, store->last_saved_page().client_id);
   base::FilePath archiver_path2 = last_archiver_path();
   EXPECT_EQ(archiver_path2, store->last_saved_page().file_path);
   EXPECT_EQ(kTestFileSize, store->last_saved_page().file_size);
   EXPECT_EQ(SavePageResult::SUCCESS, last_save_result());
 
   ResetResults();
 
   archiver_ptr->CompleteCreateArchive();
   // After this pump loop archiver_ptr is invalid.
   PumpLoop();
 
   EXPECT_EQ(kTestUrl, store->last_saved_page().url);
-  EXPECT_EQ(kTestPageBookmarkId1, store->last_saved_page().bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1, store->last_saved_page().client_id);
   base::FilePath archiver_path = last_archiver_path();
   EXPECT_EQ(archiver_path, store->last_saved_page().file_path);
   EXPECT_EQ(kTestFileSize, store->last_saved_page().file_size);
   EXPECT_EQ(SavePageResult::SUCCESS, last_save_result());
 
   ResetResults();
 
   const std::vector<OfflinePageItem>& offline_pages = model()->GetAllPages();
 
   EXPECT_EQ(2UL, offline_pages.size());
-  EXPECT_EQ(kTestUrl, offline_pages[0].url);
-  EXPECT_EQ(kTestPageBookmarkId1, offline_pages[0].bookmark_id);
-  EXPECT_EQ(archiver_path, offline_pages[0].file_path);
-  EXPECT_EQ(kTestFileSize, offline_pages[0].file_size);
-  EXPECT_EQ(0, offline_pages[0].access_count);
-  EXPECT_EQ(0, offline_pages[0].flags);
-  EXPECT_EQ(kTestUrl2, offline_pages[1].url);
-  EXPECT_EQ(kTestPageBookmarkId2, offline_pages[1].bookmark_id);
-  EXPECT_EQ(archiver_path2, offline_pages[1].file_path);
-  EXPECT_EQ(kTestFileSize, offline_pages[1].file_size);
-  EXPECT_EQ(0, offline_pages[1].access_count);
-  EXPECT_EQ(0, offline_pages[1].flags);
+  // Offline IDs are random, so the order of the pages is also random
+  // So load in the right page for the validation below.
+  const OfflinePageItem* page1;
+  const OfflinePageItem* page2;
+  if (offline_pages[0].client_id == kTestPageBookmarkId1) {
+    page1 = &offline_pages[0];
+    page2 = &offline_pages[1];
+  } else {
+    page1 = &offline_pages[1];
+    page2 = &offline_pages[0];
+  }
+
+  EXPECT_EQ(kTestUrl, page1->url);
+  EXPECT_EQ(kTestPageBookmarkId1, page1->client_id);
+  EXPECT_EQ(archiver_path, page1->file_path);
+  EXPECT_EQ(kTestFileSize, page1->file_size);
+  EXPECT_EQ(0, page1->access_count);
+  EXPECT_EQ(0, page1->flags);
+  EXPECT_EQ(kTestUrl2, page2->url);
+  EXPECT_EQ(kTestPageBookmarkId2, page2->client_id);
+  EXPECT_EQ(archiver_path2, page2->file_path);
+  EXPECT_EQ(kTestFileSize, page2->file_size);
+  EXPECT_EQ(0, page2->access_count);
+  EXPECT_EQ(0, page2->flags);
 }
 
 TEST_F(OfflinePageModelTest, MarkPageAccessed) {
   SavePage(kTestUrl, kTestPageBookmarkId1);
 
   // This will increase access_count by one.
-  model()->MarkPageAccessed(kTestPageBookmarkId1);
+  model()->MarkPageAccessed(last_save_offline_id());
   PumpLoop();
 
   const std::vector<OfflinePageItem>& offline_pages = model()->GetAllPages();
 
   EXPECT_EQ(1UL, offline_pages.size());
   EXPECT_EQ(kTestUrl, offline_pages[0].url);
-  EXPECT_EQ(kTestPageBookmarkId1, offline_pages[0].bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1, offline_pages[0].client_id);
   EXPECT_EQ(kTestFileSize, offline_pages[0].file_size);
   EXPECT_EQ(1, offline_pages[0].access_count);
 }
 
 TEST_F(OfflinePageModelTest, MarkPageForDeletion) {
   SavePage(kTestUrl, kTestPageBookmarkId1);
 
   GURL offline_url = model()->GetAllPages().begin()->GetOfflineURL();
 
   // Delete the page with undo tiggerred.
   model()->MarkPageForDeletion(
-      kTestPageBookmarkId1,
+      last_save_offline_id(),
       base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
   PumpLoop();
 
   // GetAllPages will not return the page that is marked for deletion.
   const std::vector<OfflinePageItem>& offline_pages = model()->GetAllPages();
   EXPECT_EQ(0UL, offline_pages.size());
 
   EXPECT_FALSE(model()->HasOfflinePages());
   EXPECT_EQ(nullptr, model()->GetPageByOnlineURL(kTestUrl));
-  EXPECT_EQ(nullptr, model()->GetPageByBookmarkId(kTestPageBookmarkId1));
+  EXPECT_EQ(nullptr, model()->GetPageByOfflineId(last_save_offline_id()));
   EXPECT_EQ(nullptr, model()->GetPageByOfflineURL(offline_url));
 
   // Undo the deletion.
-  model()->UndoPageDeletion(kTestPageBookmarkId1);
+  model()->UndoPageDeletion(last_save_offline_id());
   PumpLoop();
 
   // GetAllPages will now return the restored page.
   const std::vector<OfflinePageItem>& offline_pages_after_undo =
       model()->GetAllPages();
   EXPECT_EQ(1UL, offline_pages_after_undo.size());
 }
 
 TEST_F(OfflinePageModelTest, FinalizePageDeletion) {
   scoped_ptr<OfflinePageTestArchiver> archiver(BuildArchiver(
       kTestUrl, OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED));
   model()->SavePage(
       kTestUrl, kTestPageBookmarkId1, std::move(archiver),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   PumpLoop();
 
   // Mark the page for deletion.
   model()->MarkPageForDeletion(
-      kTestPageBookmarkId1,
+      last_save_offline_id(),
       base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
   PumpLoop();
 
   EXPECT_EQ(1UL, GetStore()->GetAllPages().size());
 
   // Fast forward to trigger the page deletion.
   FastForwardBy(OfflinePageModel::GetFinalDeletionDelayForTesting());
 
   EXPECT_EQ(0UL, GetStore()->GetAllPages().size());
 }
@@ skipping 10 matching lines @@
   const std::vector<OfflinePageItem>& offline_pages = model()->GetAllPages();
 
   EXPECT_EQ(0UL, offline_pages.size());
 }
 
 TEST_F(OfflinePageModelTest, DeletePageSuccessful) {
   OfflinePageTestStore* store = GetStore();
 
   // Save one page.
   SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline1 = last_save_offline_id();
   EXPECT_EQ(SavePageResult::SUCCESS, last_save_result());
   EXPECT_EQ(1u, store->GetAllPages().size());
 
   ResetResults();
 
   // Save another page.
   SavePage(kTestUrl2, kTestPageBookmarkId2);
+  int64_t offline2 = last_save_offline_id();
   EXPECT_EQ(SavePageResult::SUCCESS, last_save_result());
   EXPECT_EQ(2u, store->GetAllPages().size());
 
   ResetResults();
 
   // Delete one page.
-  model()->DeletePageByBookmarkId(
-      kTestPageBookmarkId1, base::Bind(&OfflinePageModelTest::OnDeletePageDone,
-                                       AsWeakPtr()));
+  model()->DeletePageByOfflineId(
+      offline1,
+      base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
 
   PumpLoop();
 
-  EXPECT_EQ(last_deleted_bookmark_id(), kTestPageBookmarkId1);
+  EXPECT_EQ(last_deleted_offline_id(), offline1);
   EXPECT_EQ(DeletePageResult::SUCCESS, last_delete_result());
   ASSERT_EQ(1u, store->GetAllPages().size());
   EXPECT_EQ(kTestUrl2, store->GetAllPages()[0].url);
 
   // Delete another page.
-  model()->DeletePageByBookmarkId(
-      kTestPageBookmarkId2, base::Bind(&OfflinePageModelTest::OnDeletePageDone,
-                                       AsWeakPtr()));
+  model()->DeletePageByOfflineId(
+      offline2,
+      base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
 
   ResetResults();
 
   PumpLoop();
 
-  EXPECT_EQ(last_deleted_bookmark_id(), kTestPageBookmarkId2);
+  EXPECT_EQ(last_deleted_offline_id(), offline2);
   EXPECT_EQ(DeletePageResult::SUCCESS, last_delete_result());
   EXPECT_EQ(0u, store->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelTest, DeletePageNotFound) {
-  model()->DeletePageByBookmarkId(
-      kTestPageBookmarkId1, base::Bind(&OfflinePageModelTest::OnDeletePageDone,
-                                       AsWeakPtr()));
+  model()->DeletePageByOfflineId(
+      1234LL, base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
   EXPECT_EQ(DeletePageResult::NOT_FOUND, last_delete_result());
 }
 
 TEST_F(OfflinePageModelTest, DeletePageStoreFailureOnRemove) {
   // Save a page.
   SavePage(kTestUrl, kTestPageBookmarkId1);
-
+  int64_t offline_id = last_save_offline_id();
   ResetResults();
 
   // Try to delete this page.
   GetStore()->set_test_scenario(
       OfflinePageTestStore::TestScenario::REMOVE_FAILED);
-  model()->DeletePageByBookmarkId(
-      kTestPageBookmarkId1, base::Bind(&OfflinePageModelTest::OnDeletePageDone,
-                                       AsWeakPtr()));
+  model()->DeletePageByOfflineId(
+      offline_id,
+      base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
   PumpLoop();
   EXPECT_EQ(DeletePageResult::STORE_FAILURE, last_delete_result());
 }
 
 TEST_F(OfflinePageModelTest, DetectThatOfflineCopyIsMissing) {
   // Save a page.
   SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline_id = last_save_offline_id();
 
   ResetResults();
 
-  const OfflinePageItem* page =
-      model()->GetPageByBookmarkId(kTestPageBookmarkId1);
+  const OfflinePageItem* page = model()->GetPageByOfflineId(offline_id);
+
   // Delete the offline copy of the page and check the metadata.
   base::DeleteFile(page->file_path, false);
   model()->CheckForExternalFileDeletion();
   PumpLoop();
 
-  EXPECT_EQ(last_deleted_bookmark_id(), kTestPageBookmarkId1);
+  EXPECT_EQ(last_deleted_offline_id(), offline_id);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelTest, DetectThatOfflineCopyIsMissingAfterLoad) {
   // Save a page.
   SavePage(kTestUrl, kTestPageBookmarkId1);
+  PumpLoop();
+  int64_t offline_id = last_save_offline_id();
 
   ResetResults();
 
-  const OfflinePageItem* page =
-      model()->GetPageByBookmarkId(kTestPageBookmarkId1);
+  const OfflinePageItem* page = model()->GetPageByOfflineId(offline_id);
   // Delete the offline copy of the page and check the metadata.
   base::DeleteFile(page->file_path, false);
   // Reseting the model should trigger the metadata consistency check as well.
   ResetModel();
   PumpLoop();
 
-  EXPECT_EQ(last_deleted_bookmark_id(), kTestPageBookmarkId1);
+  EXPECT_EQ(last_deleted_offline_id(), offline_id);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelTest, DeleteMultiplePages) {
   OfflinePageTestStore* store = GetStore();
 
   // Save 3 pages.
   scoped_ptr<OfflinePageTestArchiver> archiver(BuildArchiver(
       kTestUrl, OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED));
   model()->SavePage(
       kTestUrl, kTestPageBookmarkId1, std::move(archiver),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   PumpLoop();
+  int64_t offline1 = last_save_offline_id();
 
   scoped_ptr<OfflinePageTestArchiver> archiver2(BuildArchiver(
       kTestUrl2, OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED));
   model()->SavePage(
       kTestUrl2, kTestPageBookmarkId2, std::move(archiver2),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   PumpLoop();
+  int64_t offline2 = last_save_offline_id();
 
   scoped_ptr<OfflinePageTestArchiver> archiver3(BuildArchiver(
       kTestUrl3, OfflinePageArchiver::ArchiverResult::SUCCESSFULLY_CREATED));
   model()->SavePage(
       kTestUrl3, kTestPageBookmarkId3, std::move(archiver3),
       base::Bind(&OfflinePageModelTest::OnSavePageDone, AsWeakPtr()));
   PumpLoop();
 
   EXPECT_EQ(3u, store->GetAllPages().size());
 
   // Delete multiple pages.
   std::vector<int64_t> ids_to_delete;
-  ids_to_delete.push_back(kTestPageBookmarkId2);
-  ids_to_delete.push_back(kTestPageBookmarkId1);
+  ids_to_delete.push_back(offline2);
+  ids_to_delete.push_back(offline1);
   ids_to_delete.push_back(23434LL);  // Non-existent ID.
-  model()->DeletePagesByBookmarkId(
-      ids_to_delete, base::Bind(&OfflinePageModelTest::OnDeletePageDone,
-                                AsWeakPtr()));
+  model()->DeletePagesByOfflineId(
+      ids_to_delete,
+      base::Bind(&OfflinePageModelTest::OnDeletePageDone, AsWeakPtr()));
   PumpLoop();
 
   // Success is expected if at least one page is deleted successfully.
   EXPECT_EQ(DeletePageResult::SUCCESS, last_delete_result());
   EXPECT_EQ(1u, store->GetAllPages().size());
 }
 
-TEST_F(OfflinePageModelTest, GetPageByBookmarkId) {
+TEST_F(OfflinePageModelTest, GetPageByOfflineId) {
   SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline1 = last_save_offline_id();
   SavePage(kTestUrl2, kTestPageBookmarkId2);
+  int64_t offline2 = last_save_offline_id();
 
-  const OfflinePageItem* page =
-      model()->GetPageByBookmarkId(kTestPageBookmarkId1);
+  const OfflinePageItem* page = model()->GetPageByOfflineId(offline1);
   ASSERT_TRUE(page);
   EXPECT_EQ(kTestUrl, page->url);
-  EXPECT_EQ(kTestPageBookmarkId1, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1, page->client_id);
   EXPECT_EQ(kTestFileSize, page->file_size);
 
-  page = model()->GetPageByBookmarkId(kTestPageBookmarkId2);
+  page = model()->GetPageByOfflineId(offline2);
   ASSERT_TRUE(page);
   EXPECT_EQ(kTestUrl2, page->url);
-  EXPECT_EQ(kTestPageBookmarkId2, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId2, page->client_id);
   EXPECT_EQ(kTestFileSize, page->file_size);
 
-  page = model()->GetPageByBookmarkId(-42);
+  page = model()->GetPageByOfflineId(-42);
   EXPECT_FALSE(page);
 }
 
 TEST_F(OfflinePageModelTest, GetPageByOfflineURL) {
   SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline1 = last_save_offline_id();
 
   OfflinePageTestStore* store = GetStore();
   GURL offline_url = store->last_saved_page().GetOfflineURL();
 
   SavePage(kTestUrl2, kTestPageBookmarkId2);
 
   GURL offline_url2 = store->last_saved_page().GetOfflineURL();
+  int64_t offline2 = last_save_offline_id();
 
   const OfflinePageItem* page = model()->GetPageByOfflineURL(offline_url2);
   EXPECT_TRUE(page);
   EXPECT_EQ(kTestUrl2, page->url);
-  EXPECT_EQ(kTestPageBookmarkId2, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId2, page->client_id);
+  EXPECT_EQ(offline2, page->offline_id);
 
   page = model()->GetPageByOfflineURL(offline_url);
   EXPECT_TRUE(page);
   EXPECT_EQ(kTestUrl, page->url);
-  EXPECT_EQ(kTestPageBookmarkId1, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1, page->client_id);
+  EXPECT_EQ(offline1, page->offline_id);
 
   page = model()->GetPageByOfflineURL(GURL("http://foo"));
   EXPECT_FALSE(page);
 }
 
 TEST_F(OfflinePageModelTest, GetPageByOnlineURL) {
   SavePage(kTestUrl, kTestPageBookmarkId1);
   SavePage(kTestUrl2, kTestPageBookmarkId2);
 
   const OfflinePageItem* page = model()->GetPageByOnlineURL(kTestUrl2);
   EXPECT_TRUE(page);
   EXPECT_EQ(kTestUrl2, page->url);
-  EXPECT_EQ(kTestPageBookmarkId2, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId2, page->client_id);
 
   page = model()->GetPageByOnlineURL(kTestUrl);
   EXPECT_TRUE(page);
   EXPECT_EQ(kTestUrl, page->url);
-  EXPECT_EQ(kTestPageBookmarkId1, page->bookmark_id);
+  EXPECT_EQ(kTestPageBookmarkId1, page->client_id);
 
   page = model()->GetPageByOnlineURL(GURL("http://foo"));
   EXPECT_FALSE(page);
 }
 
 // Test that model returns pages that are older than 30 days as candidates for
 // clean up, hence the numbers in time delta.
 TEST_F(OfflinePageModelTest, GetPagesToCleanUp) {
   base::Time now = base::Time::Now();
 
   SavePage(kTestUrl, kTestPageBookmarkId1);
-  GetStore()->UpdateLastAccessTime(kTestPageBookmarkId1,
+  GetStore()->UpdateLastAccessTime(last_save_offline_id(),
                                    now - base::TimeDelta::FromDays(40));
 
   SavePage(kTestUrl2, kTestPageBookmarkId2);
-  GetStore()->UpdateLastAccessTime(kTestPageBookmarkId2,
+  GetStore()->UpdateLastAccessTime(last_save_offline_id(),
                                    now - base::TimeDelta::FromDays(31));
 
   SavePage(kTestUrl3, kTestPageBookmarkId3);
-  GetStore()->UpdateLastAccessTime(kTestPageBookmarkId3,
+  GetStore()->UpdateLastAccessTime(last_save_offline_id(),
                                    now - base::TimeDelta::FromDays(29));
 
   ResetModel();
 
   // Only page_1 and page_2 are expected to be picked up by the model as page_3
   // has not been in the store long enough.
   std::vector<OfflinePageItem> pages_to_clean_up = model()->GetPagesToCleanUp();
+  // Offline IDs are random, so the order of the pages is also random
+  // So load in the right page for the validation below.
+  const OfflinePageItem* page1;
+  const OfflinePageItem* page2;
+  if (pages_to_clean_up[0].client_id == kTestPageBookmarkId1) {
+    page1 = &pages_to_clean_up[0];
+    page2 = &pages_to_clean_up[1];
+  } else {
+    page1 = &pages_to_clean_up[1];
+    page2 = &pages_to_clean_up[0];
+  }
+
   EXPECT_EQ(2UL, pages_to_clean_up.size());
-  EXPECT_EQ(kTestUrl, pages_to_clean_up[0].url);
-  EXPECT_EQ(kTestPageBookmarkId1, pages_to_clean_up[0].bookmark_id);
-  EXPECT_EQ(kTestUrl2, pages_to_clean_up[1].url);
-  EXPECT_EQ(kTestPageBookmarkId2, pages_to_clean_up[1].bookmark_id);
+  EXPECT_EQ(kTestUrl, page1->url);
+  EXPECT_EQ(kTestPageBookmarkId1, page1->client_id);
+  EXPECT_EQ(kTestUrl2, page2->url);
+  EXPECT_EQ(kTestPageBookmarkId2, page2->client_id);
 }
 
 TEST_F(OfflinePageModelTest, CanSavePage) {
   EXPECT_TRUE(OfflinePageModel::CanSavePage(GURL("http://foo")));
   EXPECT_TRUE(OfflinePageModel::CanSavePage(GURL("https://foo")));
   EXPECT_FALSE(OfflinePageModel::CanSavePage(GURL("file:///foo")));
   EXPECT_FALSE(OfflinePageModel::CanSavePage(GURL("data:image/png;base64,ab")));
   EXPECT_FALSE(OfflinePageModel::CanSavePage(GURL("chrome://version")));
   EXPECT_FALSE(OfflinePageModel::CanSavePage(GURL("chrome-native://newtab/")));
 }
@@ skipping 110 matching lines @@
   const bookmarks::BookmarkNode* bookmark_node = CreateBookmarkNode(kTestUrl);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Changing the bookmark title should have no effect.
   bookmark_model()->SetTitle(
       bookmark_node, base::string16(base::ASCIIToUTF16("foo")));
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Adds an offline copy for the bookmark.
-  SavePage(kTestUrl, bookmark_node->id());
+  SavePage(kTestUrl, ClientId(BOOKMARK_NAMESPACE,
+                              base::Int64ToString(bookmark_node->id())));
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 
   // Changes the bookmark title. The offline copy was not affected.
   bookmark_model()->SetTitle(
       bookmark_node, base::string16(base::ASCIIToUTF16("bar")));
   PumpLoop();
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelBookmarkChangeTest, ChangeBookmakeURL) {
   // Creates a bookmark without offline copy.
   const bookmarks::BookmarkNode* bookmark_node = CreateBookmarkNode(kTestUrl2);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Changing the bookmark URL should have no effect. Chrome should not crash.
   // (http://crbug.com/560518)
   bookmark_model()->SetURL(bookmark_node, kTestUrl);
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Adds an offline copy for the bookmark.
-  SavePage(kTestUrl, bookmark_node->id());
+  SavePage(kTestUrl, ClientId(BOOKMARK_NAMESPACE,
+                              base::Int64ToString(bookmark_node->id())));
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 
   // The offline copy should be removed upon the bookmark URL change.
   // (http://crbug.com/558929)
   bookmark_model()->SetURL(bookmark_node, kTestUrl2);
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelBookmarkChangeTest, RemoveBookmark) {
   // Creates a bookmark without offline copy.
   const bookmarks::BookmarkNode* bookmark_node = CreateBookmarkNode(kTestUrl2);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Removing the bookmark should have no effect.
   bookmark_model()->Remove(bookmark_node);
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Creates a bookmark with offline copy.
   bookmark_node = CreateBookmarkNode(kTestUrl);
-  SavePage(kTestUrl, bookmark_node->id());
+  SavePage(kTestUrl, ClientId(BOOKMARK_NAMESPACE,
+                              base::Int64ToString(bookmark_node->id())));
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 
   // The offline copy should also be removed upon the bookmark removal.
   bookmark_model()->Remove(bookmark_node);
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 }
 
 TEST_F(OfflinePageModelBookmarkChangeTest, UndoBookmarkRemoval) {
   // Enables undo support.
   bookmark_model()->SetUndoDelegate(this);
 
   // Creates a bookmark without offline copy.
   const bookmarks::BookmarkNode* bookmark_node = CreateBookmarkNode(kTestUrl2);
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Removing the bookmark and undoing the removal should have no effect.
   bookmark_model()->Remove(bookmark_node);
   PumpLoop();
   UndoBookmarkRemoval();
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // Creates a bookmark with offline copy.
   bookmark_node = CreateBookmarkNode(kTestUrl);
-  SavePage(kTestUrl, bookmark_node->id());
+  SavePage(kTestUrl, ClientId(BOOKMARK_NAMESPACE,
+                              base::Int64ToString(bookmark_node->id())));
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 
   // The offline copy should also be removed upon the bookmark removal.
   bookmark_model()->Remove(bookmark_node);
   PumpLoop();
   EXPECT_EQ(0UL, model()->GetAllPages().size());
 
   // The offline copy should be restored upon the bookmark restore.
   UndoBookmarkRemoval();
   PumpLoop();
   EXPECT_EQ(1UL, model()->GetAllPages().size());
 }
 
+TEST_F(OfflinePageModelTest, SaveRetrieveMultipleClientIds) {
+  EXPECT_FALSE(model()->HasOfflinePages());
+  SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline1 = last_save_offline_id();
+  EXPECT_TRUE(model()->HasOfflinePages());
+
+  SavePage(kTestUrl, kTestPageBookmarkId1);
+  int64_t offline2 = last_save_offline_id();
+
+  EXPECT_NE(offline1, offline2);
+
+  const std::vector<int64_t> ids =
+      model()->GetOfflineIdsForClientId(kTestPageBookmarkId1);
+
+  EXPECT_EQ(2UL, ids.size());
+
+  std::set<int64_t> id_set;
+  for (size_t i = 0; i < ids.size(); i++) {
+    id_set.insert(ids[i]);
+  }
+
+  EXPECT_TRUE(id_set.find(offline1) != id_set.end());
+  EXPECT_TRUE(id_set.find(offline2) != id_set.end());
+}
+
 }  // namespace offline_pages