[turbofan] Remove obsolete parts of change lowering.

src/compiler/pipeline.cc

 // Copyright 2014 the V8 project 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 "src/compiler/pipeline.h"
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/base/adapters.h"
@@ skipping 821 matching lines @@
     Schedule* schedule = Scheduler::ComputeSchedule(temp_zone, data->graph(),
                                                     Scheduler::kNoFlags);
     if (FLAG_turbo_verify) ScheduleVerifier::Run(schedule);
     TraceSchedule(data->info(), schedule);
 
     // Post-pass for wiring the control/effects
     // - connect allocating representation changes into the control&effect
     //   chains and lower them,
     // - get rid of the region markers,
     // - introduce effect phis and rewire effects to get SSA again.
-    EffectControlLinearizer introducer(data->jsgraph(), schedule, temp_zone);
-    introducer.Run();
+    EffectControlLinearizer linearizer(data->jsgraph(), schedule, temp_zone);
+    linearizer.Run();
   }
 };
 
 struct LateOptimizationPhase {
   static const char* phase_name() { return "late optimization"; }
 
   void Run(PipelineData* data, Zone* temp_zone) {
     JSGraphReducer graph_reducer(data->jsgraph(), temp_zone);
     DeadCodeElimination dead_code_elimination(&graph_reducer, data->graph(),
                                               data->common());
@@ skipping 737 matching lines @@
   }
 
   data->DeleteRegisterAllocationZone();
 }
 
 Isolate* Pipeline::isolate() const { return info()->isolate(); }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8