Update from https://crrev.com/327068

mojo/common/task_tracker_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 "mojo/common/task_tracker.h"
 
 #include "base/tracked_objects.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace mojo {
@@ skipping 16 matching lines @@
 TEST_F(TaskTrackerTest, Nesting) {
   intptr_t id0 = TaskTracker::StartTracking("Foo", "foo.cc", 1, nullptr);
   intptr_t id1 = TaskTracker::StartTracking("Bar", "bar.cc", 1, nullptr);
   TaskTracker::EndTracking(id1);
   TaskTracker::EndTracking(id0);
 
   tracked_objects::ProcessDataSnapshot snapshot;
   tracked_objects::ThreadData::Snapshot(&snapshot);
 
   // Nested one is ignored.
-  EXPECT_EQ(1U, snapshot.tasks.size());
+  EXPECT_EQ(1U, snapshot.phased_process_data_snapshots[0].tasks.size());
 }
 
 TEST_F(TaskTrackerTest, Twice) {
   intptr_t id0 = TaskTracker::StartTracking("Foo", "foo.cc", 1, nullptr);
   TaskTracker::EndTracking(id0);
   intptr_t id1 = TaskTracker::StartTracking("Bar", "bar.cc", 1, nullptr);
   TaskTracker::EndTracking(id1);
 
   tracked_objects::ProcessDataSnapshot snapshot;
   tracked_objects::ThreadData::Snapshot(&snapshot);
 
-  EXPECT_EQ(2U, snapshot.tasks.size());
+  EXPECT_EQ(2U, snapshot.phased_process_data_snapshots[0].tasks.size());
 }
 
 }  // namespace test
 }  // namespace common
 }  // namespace mojo