[Sync] Componentize synced_tab_delegate

chrome/browser/sync/glue/synced_session_tracker_unittest.cc

 // Copyright 2012 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 <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/sync/glue/synced_session_tracker.h"
 #include "components/sessions/core/serialized_navigation_entry_test_helper.h"
 #include "components/sessions/core/session_types.h"
+#include "components/sync_sessions/fake_sync_sessions_client.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace browser_sync {
 
-typedef testing::Test SyncedSessionTrackerTest;
+namespace {
+
+const std::string kValidUrl = "http://www.example.com";
+const std::string kInvalidUrl = "invalid.url";
+
+}  // namespace
+
+class SyncedSessionTrackerTest : public testing::Test {
+ public:
+  SyncedSessionTrackerTest() : tracker_(&sessions_client_) {}
+  ~SyncedSessionTrackerTest() override {}
+
+  SyncedSessionTracker* GetTracker() { return &tracker_; }
+
+ private:
+  sync_sessions::FakeSyncSessionsClient sessions_client_;
+  SyncedSessionTracker tracker_;
+};
 
 TEST_F(SyncedSessionTrackerTest, GetSession) {
-  SyncedSessionTracker tracker;
-  sync_driver::SyncedSession* session1 = tracker.GetSession("tag");
-  sync_driver::SyncedSession* session2 = tracker.GetSession("tag2");
-  ASSERT_EQ(session1, tracker.GetSession("tag"));
+  sync_driver::SyncedSession* session1 = GetTracker()->GetSession("tag");
+  sync_driver::SyncedSession* session2 = GetTracker()->GetSession("tag2");
+  ASSERT_EQ(session1, GetTracker()->GetSession("tag"));
   ASSERT_NE(session1, session2);
   // Should clean up memory on its own.
 }
 
 TEST_F(SyncedSessionTrackerTest, GetTabUnmapped) {
-  SyncedSessionTracker tracker;
-  sessions::SessionTab* tab = tracker.GetTab("tag", 0, 0);
-  ASSERT_EQ(tab, tracker.GetTab("tag", 0, 0));
+  sessions::SessionTab* tab = GetTracker()->GetTab("tag", 0, 0);
+  ASSERT_EQ(tab, GetTracker()->GetTab("tag", 0, 0));
   // Should clean up memory on its own.
 }
 
 TEST_F(SyncedSessionTrackerTest, PutWindowInSession) {
-  SyncedSessionTracker tracker;
-  tracker.PutWindowInSession("tag", 0);
-  sync_driver::SyncedSession* session = tracker.GetSession("tag");
+  GetTracker()->PutWindowInSession("tag", 0);
+  sync_driver::SyncedSession* session = GetTracker()->GetSession("tag");
   ASSERT_EQ(1U, session->windows.size());
   // Should clean up memory on its own.
 }
 
 TEST_F(SyncedSessionTrackerTest, PutTabInWindow) {
-  SyncedSessionTracker tracker;
-  tracker.PutWindowInSession("tag", 10);
-  tracker.PutTabInWindow("tag", 10, 15, 0);  // win id 10, tab id 15, tab ind 0.
-  sync_driver::SyncedSession* session = tracker.GetSession("tag");
+  GetTracker()->PutWindowInSession("tag", 10);
+  GetTracker()->PutTabInWindow("tag", 10, 15,
+                               0);  // win id 10, tab id 15, tab ind 0.
+  sync_driver::SyncedSession* session = GetTracker()->GetSession("tag");
   ASSERT_EQ(1U, session->windows.size());
   ASSERT_EQ(1U, session->windows[10]->tabs.size());
-  ASSERT_EQ(tracker.GetTab("tag", 15, 1), session->windows[10]->tabs[0]);
+  ASSERT_EQ(GetTracker()->GetTab("tag", 15, 1), session->windows[10]->tabs[0]);
   // Should clean up memory on its own.
 }
 
 TEST_F(SyncedSessionTrackerTest, LookupAllForeignSessions) {
-  SyncedSessionTracker tracker;
   std::vector<const sync_driver::SyncedSession*> sessions;
-  ASSERT_FALSE(tracker.LookupAllForeignSessions(&sessions));
-  tracker.GetSession("tag1");
-  tracker.GetSession("tag2");
-  tracker.PutWindowInSession("tag1", 0);
-  tracker.PutTabInWindow("tag1", 0, 15, 0);
-  sessions::SessionTab* tab = tracker.GetTab("tag1", 15, 1);
+  ASSERT_FALSE(GetTracker()->LookupAllForeignSessions(&sessions));
+  GetTracker()->GetSession("tag1");
+  GetTracker()->PutWindowInSession("tag1", 0);
+  GetTracker()->PutTabInWindow("tag1", 0, 15, 0);
+  sessions::SessionTab* tab = GetTracker()->GetTab("tag1", 15, 1);
+  ASSERT_TRUE(tab);
+  tab->navigations.push_back(
+      sessions::SerializedNavigationEntryTestHelper::CreateNavigation(kValidUrl,
+                                                                      "title"));
+  GetTracker()->GetSession("tag2");
+  GetTracker()->GetSession("tag3");
+  GetTracker()->PutWindowInSession("tag3", 0);
+  GetTracker()->PutTabInWindow("tag3", 0, 15, 0);
+  tab = GetTracker()->GetTab("tag3", 15, 1);
   ASSERT_TRUE(tab);
   tab->navigations.push_back(
       sessions::SerializedNavigationEntryTestHelper::CreateNavigation(
-      "bla://valid_url", "title"));
-  ASSERT_TRUE(tracker.LookupAllForeignSessions(&sessions));
+          kInvalidUrl, "title"));
+  ASSERT_TRUE(GetTracker()->LookupAllForeignSessions(&sessions));
   // Only the session with a valid window and tab gets returned.
   ASSERT_EQ(1U, sessions.size());
   ASSERT_EQ("tag1", sessions[0]->session_tag);
 }
 
 TEST_F(SyncedSessionTrackerTest, LookupSessionWindows) {
-  SyncedSessionTracker tracker;
   std::vector<const sessions::SessionWindow*> windows;
-  ASSERT_FALSE(tracker.LookupSessionWindows("tag1", &windows));
-  tracker.GetSession("tag1");
-  tracker.PutWindowInSession("tag1", 0);
-  tracker.PutWindowInSession("tag1", 2);
-  tracker.GetSession("tag2");
-  tracker.PutWindowInSession("tag2", 0);
-  tracker.PutWindowInSession("tag2", 2);
-  ASSERT_TRUE(tracker.LookupSessionWindows("tag1", &windows));
+  ASSERT_FALSE(GetTracker()->LookupSessionWindows("tag1", &windows));
+  GetTracker()->GetSession("tag1");
+  GetTracker()->PutWindowInSession("tag1", 0);
+  GetTracker()->PutWindowInSession("tag1", 2);
+  GetTracker()->GetSession("tag2");
+  GetTracker()->PutWindowInSession("tag2", 0);
+  GetTracker()->PutWindowInSession("tag2", 2);
+  ASSERT_TRUE(GetTracker()->LookupSessionWindows("tag1", &windows));
   ASSERT_EQ(2U, windows.size());  // Only windows from tag1 session.
   ASSERT_NE((sessions::SessionWindow*)nullptr, windows[0]);
   ASSERT_NE((sessions::SessionWindow*)nullptr, windows[1]);
   ASSERT_NE(windows[1], windows[0]);
 }
 
 TEST_F(SyncedSessionTrackerTest, LookupSessionTab) {
-  SyncedSessionTracker tracker;
   const sessions::SessionTab* tab;
-  ASSERT_FALSE(tracker.LookupSessionTab("tag1", 5, &tab));
-  tracker.GetSession("tag1");
-  tracker.PutWindowInSession("tag1", 0);
-  tracker.PutTabInWindow("tag1", 0, 5, 0);
-  ASSERT_TRUE(tracker.LookupSessionTab("tag1", 5, &tab));
+  ASSERT_FALSE(GetTracker()->LookupSessionTab("tag1", 5, &tab));
+  GetTracker()->GetSession("tag1");
+  GetTracker()->PutWindowInSession("tag1", 0);
+  GetTracker()->PutTabInWindow("tag1", 0, 5, 0);
+  ASSERT_TRUE(GetTracker()->LookupSessionTab("tag1", 5, &tab));
   ASSERT_NE((sessions::SessionTab*)nullptr, tab);
 }
 
 TEST_F(SyncedSessionTrackerTest, Complex) {
   const std::string tag1 = "tag";
   const std::string tag2 = "tag2";
   const std::string tag3 = "tag3";
-  SyncedSessionTracker tracker;
   std::vector<sessions::SessionTab*> tabs1, tabs2;
   sessions::SessionTab* temp_tab;
-  ASSERT_TRUE(tracker.Empty());
-  ASSERT_EQ(0U, tracker.num_synced_sessions());
-  ASSERT_EQ(0U, tracker.num_synced_tabs(tag1));
-  tabs1.push_back(tracker.GetTab(tag1, 0, 0));
-  tabs1.push_back(tracker.GetTab(tag1, 1, 1));
-  tabs1.push_back(tracker.GetTab(tag1, 2, 2));
-  ASSERT_EQ(3U, tracker.num_synced_tabs(tag1));
-  ASSERT_EQ(0U, tracker.num_synced_sessions());
-  temp_tab = tracker.GetTab(tag1, 0, 0);  // Already created.
-  ASSERT_EQ(3U, tracker.num_synced_tabs(tag1));
-  ASSERT_EQ(0U, tracker.num_synced_sessions());
+  ASSERT_TRUE(GetTracker()->Empty());
+  ASSERT_EQ(0U, GetTracker()->num_synced_sessions());
+  ASSERT_EQ(0U, GetTracker()->num_synced_tabs(tag1));
+  tabs1.push_back(GetTracker()->GetTab(tag1, 0, 0));
+  tabs1.push_back(GetTracker()->GetTab(tag1, 1, 1));
+  tabs1.push_back(GetTracker()->GetTab(tag1, 2, 2));
+  ASSERT_EQ(3U, GetTracker()->num_synced_tabs(tag1));
+  ASSERT_EQ(0U, GetTracker()->num_synced_sessions());
+  temp_tab = GetTracker()->GetTab(tag1, 0, 0);  // Already created.
+  ASSERT_EQ(3U, GetTracker()->num_synced_tabs(tag1));
+  ASSERT_EQ(0U, GetTracker()->num_synced_sessions());
   ASSERT_EQ(tabs1[0], temp_tab);
-  tabs2.push_back(tracker.GetTab(tag2, 0, 0));
-  ASSERT_EQ(1U, tracker.num_synced_tabs(tag2));
-  ASSERT_EQ(0U, tracker.num_synced_sessions());
-  ASSERT_FALSE(tracker.DeleteSession(tag3));
+  tabs2.push_back(GetTracker()->GetTab(tag2, 0, 0));
+  ASSERT_EQ(1U, GetTracker()->num_synced_tabs(tag2));
+  ASSERT_EQ(0U, GetTracker()->num_synced_sessions());
+  ASSERT_FALSE(GetTracker()->DeleteSession(tag3));
 
-  sync_driver::SyncedSession* session = tracker.GetSession(tag1);
-  sync_driver::SyncedSession* session2 = tracker.GetSession(tag2);
-  sync_driver::SyncedSession* session3 = tracker.GetSession(tag3);
-  ASSERT_EQ(3U, tracker.num_synced_sessions());
+  sync_driver::SyncedSession* session = GetTracker()->GetSession(tag1);
+  sync_driver::SyncedSession* session2 = GetTracker()->GetSession(tag2);
+  sync_driver::SyncedSession* session3 = GetTracker()->GetSession(tag3);
+  ASSERT_EQ(3U, GetTracker()->num_synced_sessions());
 
   ASSERT_TRUE(session);
   ASSERT_TRUE(session2);
   ASSERT_TRUE(session3);
   ASSERT_NE(session, session2);
   ASSERT_NE(session2, session3);
-  ASSERT_TRUE(tracker.DeleteSession(tag3));
-  ASSERT_EQ(2U, tracker.num_synced_sessions());
+  ASSERT_TRUE(GetTracker()->DeleteSession(tag3));
+  ASSERT_EQ(2U, GetTracker()->num_synced_sessions());
 
-  tracker.PutWindowInSession(tag1, 0);      // Create a window.
-  tracker.PutTabInWindow(tag1, 0, 2, 0);    // No longer unmapped.
-  ASSERT_EQ(3U, tracker.num_synced_tabs(tag1));      // Has not changed.
+  GetTracker()->PutWindowInSession(tag1, 0);           // Create a window.
+  GetTracker()->PutTabInWindow(tag1, 0, 2, 0);         // No longer unmapped.
+  ASSERT_EQ(3U, GetTracker()->num_synced_tabs(tag1));  // Has not changed.
 
   const sessions::SessionTab *tab_ptr;
-  ASSERT_TRUE(tracker.LookupSessionTab(tag1, 0, &tab_ptr));
+  ASSERT_TRUE(GetTracker()->LookupSessionTab(tag1, 0, &tab_ptr));
   ASSERT_EQ(tab_ptr, tabs1[0]);
-  ASSERT_TRUE(tracker.LookupSessionTab(tag1, 2, &tab_ptr));
+  ASSERT_TRUE(GetTracker()->LookupSessionTab(tag1, 2, &tab_ptr));
   ASSERT_EQ(tab_ptr, tabs1[2]);
-  ASSERT_FALSE(tracker.LookupSessionTab(tag1, 3, &tab_ptr));
+  ASSERT_FALSE(GetTracker()->LookupSessionTab(tag1, 3, &tab_ptr));
   ASSERT_EQ(static_cast<const sessions::SessionTab*>(NULL), tab_ptr);
 
   std::vector<const sessions::SessionWindow*> windows;
-  ASSERT_TRUE(tracker.LookupSessionWindows(tag1, &windows));
+  ASSERT_TRUE(GetTracker()->LookupSessionWindows(tag1, &windows));
   ASSERT_EQ(1U, windows.size());
-  ASSERT_TRUE(tracker.LookupSessionWindows(tag2, &windows));
+  ASSERT_TRUE(GetTracker()->LookupSessionWindows(tag2, &windows));
   ASSERT_EQ(0U, windows.size());
 
   // The sessions don't have valid tabs, lookup should not succeed.
   std::vector<const sync_driver::SyncedSession*> sessions;
-  ASSERT_FALSE(tracker.LookupAllForeignSessions(&sessions));
+  ASSERT_FALSE(GetTracker()->LookupAllForeignSessions(&sessions));
 
-  tracker.Clear();
-  ASSERT_EQ(0U, tracker.num_synced_tabs(tag1));
-  ASSERT_EQ(0U, tracker.num_synced_tabs(tag2));
-  ASSERT_EQ(0U, tracker.num_synced_sessions());
+  GetTracker()->Clear();
+  ASSERT_EQ(0U, GetTracker()->num_synced_tabs(tag1));
+  ASSERT_EQ(0U, GetTracker()->num_synced_tabs(tag2));
+  ASSERT_EQ(0U, GetTracker()->num_synced_sessions());
 }
 
 TEST_F(SyncedSessionTrackerTest, ManyGetTabs) {
-  SyncedSessionTracker tracker;
-  ASSERT_TRUE(tracker.Empty());
+  ASSERT_TRUE(GetTracker()->Empty());
   const int kMaxSessions = 10;
   const int kMaxTabs = 1000;
   const int kMaxAttempts = 10000;
   for (int j=0; j<kMaxSessions; ++j) {
     std::string tag = base::StringPrintf("tag%d", j);
     for (int i=0; i<kMaxAttempts; ++i) {
       // More attempts than tabs means we'll sometimes get the same tabs,
       // sometimes have to allocate new tabs.
       int rand_tab_num = base::RandInt(0, kMaxTabs);
       sessions::SessionTab* tab =
-          tracker.GetTab(tag, rand_tab_num, rand_tab_num + 1);
+          GetTracker()->GetTab(tag, rand_tab_num, rand_tab_num + 1);
       ASSERT_TRUE(tab);
     }
   }
 }
 
 TEST_F(SyncedSessionTrackerTest, LookupTabNodeIds) {
-  SyncedSessionTracker tracker;
   std::set<int> result;
   std::string tag1 = "session1";
   std::string tag2 = "session2";
   std::string tag3 = "session3";
 
-  tracker.GetTab(tag1, 1, 1);
-  tracker.GetTab(tag1, 2, 2);
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag1, &result));
+  GetTracker()->GetTab(tag1, 1, 1);
+  GetTracker()->GetTab(tag1, 2, 2);
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag1, &result));
   EXPECT_EQ(2U, result.size());
   EXPECT_FALSE(result.end() == result.find(1));
   EXPECT_FALSE(result.end() == result.find(2));
-  EXPECT_FALSE(tracker.LookupTabNodeIds(tag2, &result));
+  EXPECT_FALSE(GetTracker()->LookupTabNodeIds(tag2, &result));
 
-  tracker.PutWindowInSession(tag1, 0);
-  tracker.PutTabInWindow(tag1, 0, 3, 0);
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag1, &result));
+  GetTracker()->PutWindowInSession(tag1, 0);
+  GetTracker()->PutTabInWindow(tag1, 0, 3, 0);
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag1, &result));
   EXPECT_EQ(2U, result.size());
 
-  tracker.GetTab(tag1, 3, 3);
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag1, &result));
+  GetTracker()->GetTab(tag1, 3, 3);
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag1, &result));
   EXPECT_EQ(3U, result.size());
   EXPECT_FALSE(result.end() == result.find(3));
 
-  tracker.GetTab(tag2, 1, 21);
-  tracker.GetTab(tag2, 2, 22);
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag2, &result));
+  GetTracker()->GetTab(tag2, 1, 21);
+  GetTracker()->GetTab(tag2, 2, 22);
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag2, &result));
   EXPECT_EQ(2U, result.size());
   EXPECT_FALSE(result.end() == result.find(21));
   EXPECT_FALSE(result.end() == result.find(22));
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag1, &result));
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag1, &result));
   EXPECT_EQ(3U, result.size());
   EXPECT_FALSE(result.end() == result.find(1));
   EXPECT_FALSE(result.end() == result.find(2));
 
-  EXPECT_FALSE(tracker.LookupTabNodeIds(tag3, &result));
-  tracker.PutWindowInSession(tag3, 1);
-  tracker.PutTabInWindow(tag3, 1, 5, 0);
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag3, &result));
+  EXPECT_FALSE(GetTracker()->LookupTabNodeIds(tag3, &result));
+  GetTracker()->PutWindowInSession(tag3, 1);
+  GetTracker()->PutTabInWindow(tag3, 1, 5, 0);
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag3, &result));
   EXPECT_TRUE(result.empty());
-  EXPECT_TRUE(tracker.DeleteSession(tag3));
-  EXPECT_FALSE(tracker.LookupTabNodeIds(tag3, &result));
+  EXPECT_TRUE(GetTracker()->DeleteSession(tag3));
+  EXPECT_FALSE(GetTracker()->LookupTabNodeIds(tag3, &result));
 
-  EXPECT_TRUE(tracker.DeleteSession(tag1));
-  EXPECT_FALSE(tracker.LookupTabNodeIds(tag1, &result));
-  EXPECT_TRUE(tracker.LookupTabNodeIds(tag2, &result));
+  EXPECT_TRUE(GetTracker()->DeleteSession(tag1));
+  EXPECT_FALSE(GetTracker()->LookupTabNodeIds(tag1, &result));
+  EXPECT_TRUE(GetTracker()->LookupTabNodeIds(tag2, &result));
   EXPECT_EQ(2U, result.size());
   EXPECT_FALSE(result.end() == result.find(21));
   EXPECT_FALSE(result.end() == result.find(22));
-  EXPECT_TRUE(tracker.DeleteSession(tag2));
-  EXPECT_FALSE(tracker.LookupTabNodeIds(tag2, &result));
+  EXPECT_TRUE(GetTracker()->DeleteSession(tag2));
+  EXPECT_FALSE(GetTracker()->LookupTabNodeIds(tag2, &result));
 }
 
 TEST_F(SyncedSessionTrackerTest, SessionTracking) {
-  SyncedSessionTracker tracker;
-  ASSERT_TRUE(tracker.Empty());
+  ASSERT_TRUE(GetTracker()->Empty());
   std::string tag1 = "tag1";
   std::string tag2 = "tag2";
 
   // Create some session information that is stale.
-  sync_driver::SyncedSession* session1 = tracker.GetSession(tag1);
-  tracker.PutWindowInSession(tag1, 0);
-  tracker.PutTabInWindow(tag1, 0, 0, 0);
-  tracker.PutTabInWindow(tag1, 0, 1, 1);
-  tracker.GetTab(tag1, 2, 3U)->window_id.set_id(0);  // Will be unmapped.
-  tracker.GetTab(tag1, 3, 4U)->window_id.set_id(0);  // Will be unmapped.
-  tracker.PutWindowInSession(tag1, 1);
-  tracker.PutTabInWindow(tag1, 1, 4, 0);
-  tracker.PutTabInWindow(tag1, 1, 5, 1);
+  sync_driver::SyncedSession* session1 = GetTracker()->GetSession(tag1);
+  GetTracker()->PutWindowInSession(tag1, 0);
+  GetTracker()->PutTabInWindow(tag1, 0, 0, 0);
+  GetTracker()->PutTabInWindow(tag1, 0, 1, 1);
+  GetTracker()->GetTab(tag1, 2, 3U)->window_id.set_id(0);  // Will be unmapped.
+  GetTracker()->GetTab(tag1, 3, 4U)->window_id.set_id(0);  // Will be unmapped.
+  GetTracker()->PutWindowInSession(tag1, 1);
+  GetTracker()->PutTabInWindow(tag1, 1, 4, 0);
+  GetTracker()->PutTabInWindow(tag1, 1, 5, 1);
   ASSERT_EQ(2U, session1->windows.size());
   ASSERT_EQ(2U, session1->windows[0]->tabs.size());
   ASSERT_EQ(2U, session1->windows[1]->tabs.size());
-  ASSERT_EQ(6U, tracker.num_synced_tabs(tag1));
+  ASSERT_EQ(6U, GetTracker()->num_synced_tabs(tag1));
 
   // Create a session that should not be affected.
-  sync_driver::SyncedSession* session2 = tracker.GetSession(tag2);
-  tracker.PutWindowInSession(tag2, 2);
-  tracker.PutTabInWindow(tag2, 2, 1, 0);
+  sync_driver::SyncedSession* session2 = GetTracker()->GetSession(tag2);
+  GetTracker()->PutWindowInSession(tag2, 2);
+  GetTracker()->PutTabInWindow(tag2, 2, 1, 0);
   ASSERT_EQ(1U, session2->windows.size());
   ASSERT_EQ(1U, session2->windows[2]->tabs.size());
-  ASSERT_EQ(1U, tracker.num_synced_tabs(tag2));
+  ASSERT_EQ(1U, GetTracker()->num_synced_tabs(tag2));
 
   // Reset tracking and get the current windows/tabs.
   // We simulate moving a tab from one window to another, then closing the
   // first window (including its one remaining tab), and opening a new tab
   // on the remaining window.
 
   // New tab, arrived before meta node so unmapped.
-  tracker.GetTab(tag1, 6, 7U);
-  tracker.ResetSessionTracking(tag1);
-  tracker.PutWindowInSession(tag1, 0);
-  tracker.PutTabInWindow(tag1, 0, 0, 0);
+  GetTracker()->GetTab(tag1, 6, 7U);
+  GetTracker()->ResetSessionTracking(tag1);
+  GetTracker()->PutWindowInSession(tag1, 0);
+  GetTracker()->PutTabInWindow(tag1, 0, 0, 0);
   // Tab 1 is closed.
-  tracker.PutTabInWindow(tag1, 0, 2, 1);  // No longer unmapped.
+  GetTracker()->PutTabInWindow(tag1, 0, 2, 1);  // No longer unmapped.
   // Tab 3 was unmapped and does not get used.
-  tracker.PutTabInWindow(tag1, 0, 4, 2);  // Moved from window 1.
+  GetTracker()->PutTabInWindow(tag1, 0, 4, 2);  // Moved from window 1.
   // Window 1 was closed, along with tab 5.
-  tracker.PutTabInWindow(tag1, 0, 6, 3);  // No longer unmapped.
+  GetTracker()->PutTabInWindow(tag1, 0, 6, 3);  // No longer unmapped.
   // Session 2 should not be affected.
-  tracker.CleanupSession(tag1);
+  GetTracker()->CleanupSession(tag1);
 
   // Verify that only those parts of the session not owned have been removed.
   ASSERT_EQ(1U, session1->windows.size());
   ASSERT_EQ(4U, session1->windows[0]->tabs.size());
   ASSERT_EQ(1U, session2->windows.size());
   ASSERT_EQ(1U, session2->windows[2]->tabs.size());
-  ASSERT_EQ(2U, tracker.num_synced_sessions());
-  ASSERT_EQ(4U, tracker.num_synced_tabs(tag1));
-  ASSERT_EQ(1U, tracker.num_synced_tabs(tag2));
+  ASSERT_EQ(2U, GetTracker()->num_synced_sessions());
+  ASSERT_EQ(4U, GetTracker()->num_synced_tabs(tag1));
+  ASSERT_EQ(1U, GetTracker()->num_synced_tabs(tag2));
 
   // All memory should be properly deallocated by destructor for the
   // SyncedSessionTracker.
 }
 
 }  // namespace browser_sync