Re-write many calls to WrapUnique() with MakeUnique()

components/sync_sessions/sync_sessions_metrics_unittest.cc

 // 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.
 
 #include "components/sync_sessions/sync_sessions_metrics.h"
 
 #include <algorithm>
 
 #include "base/memory/ptr_util.h"
 #include "base/test/histogram_tester.h"
@@ skipping 47 matching lines @@
 class SyncSessionsMetricsTest : public ::testing::Test {
  protected:
   SyncSessionsMetricsTest() : fake_manager_(&fake_client_, &sessions_) {}
 
   // Sets the tab/window/session timestamps and creates anything needed. The new
   // calls in here are safe because the session/window objects are going to
   // delete all their children when their destructors are invoked.
   void PushTab(size_t tabIndex, int windowIndex, Time timestamp) {
     // First add sessions/windows as necessary.
     while (tabIndex >= sessions_.size()) {
-      sessions_.push_back(base::WrapUnique(new SyncedSession()));
+      sessions_.push_back(base::MakeUnique<SyncedSession>());
     }
     if (sessions_[tabIndex]->windows.find(windowIndex) ==
         sessions_[tabIndex]->windows.end()) {
       sessions_[tabIndex]->windows[windowIndex] = new SessionWindow();
     }
 
     sessions_[tabIndex]->modified_time =
         std::max(sessions_[tabIndex]->modified_time, timestamp);
     sessions_[tabIndex]->windows[windowIndex]->timestamp = std::max(
         sessions_[tabIndex]->windows[windowIndex]->timestamp, timestamp);
@@ skipping 117 matching lines @@
 
 TEST_F(SyncSessionsMetricsTest, EmitNormalCase) {
   base::HistogramTester histogram_tester;
   PushTab(0, 0, Time::Now() - TimeDelta::FromHours(1));
   SyncSessionsMetrics::RecordYoungestForeignTabAgeOnNTP(
       get_sessions_sync_manager());
   histogram_tester.ExpectTotalCount("Sync.YoungestForeignTabAgeOnNTP", 1);
 }
 
 }  // namespace sync_sessions