Fix include path for moved thread_task_runner_handle.h header in blimp/

blimp/client/session/assignment_source_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 "blimp/client/session/assignment_source.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
 #include "base/run_loop.h"
 #include "base/test/test_simple_task_runner.h"
-#include "base/thread_task_runner_handle.h"
+#include "base/threading/thread_task_runner_handle.h"
 #include "base/values.h"
 #include "blimp/client/app/blimp_client_switches.h"
 #include "blimp/common/protocol_version.h"
 #include "components/safe_json/testing_json_parser.h"
 #include "net/base/test_data_directory.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
@@ skipping 351 matching lines @@
   EXPECT_CALL(*this, AssignmentResponse(
                          AssignmentSource::Result::RESULT_INVALID_CERT, _));
   GetNetworkAssignmentAndWaitForResponse(net::HTTP_OK, net::Error::OK,
                                          ValueToString(*response),
                                          kTestAuthToken, kEngineVersion);
 }
 
 }  // namespace
 }  // namespace client
 }  // namespace blimp