[turbofan] remove schedule from InstructionSequence

src/compiler/schedule.cc

 // Copyright 2013 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/node.h"
 #include "src/compiler/node-properties.h"
 #include "src/compiler/node-properties-inl.h"
 #include "src/compiler/schedule.h"
 #include "src/ostreams.h"
 
@@ skipping 87 matching lines @@
   UNREACHABLE();
   return os;
 }
 
 
 std::ostream& operator<<(std::ostream& os, const BasicBlock::Id& id) {
   return os << id.ToSize();
 }
 
 
+std::ostream& operator<<(std::ostream& os, const BasicBlock::RpoNumber& rpo) {
+  return os << rpo.ToSize();
+}
+
+
 Schedule::Schedule(Zone* zone, size_t node_count_hint)
     : zone_(zone),
       all_blocks_(zone),
       nodeid_to_block_(zone),
       rpo_order_(zone),
       start_(NewBasicBlock()),
       end_(NewBasicBlock()) {
   nodeid_to_block_.reserve(node_count_hint);
 }
 
@@ skipping 169 matching lines @@
       }
       os << "\n";
     }
   }
   return os;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8