[Interpreter] Avoid accessing Isolate from during bytecode generation.

src/interpreter/handler-table-builder.h

 // Copyright 2016 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.
 
 #ifndef V8_INTERPRETER_HANDLER_TABLE_BUILDER_H_
 #define V8_INTERPRETER_HANDLER_TABLE_BUILDER_H_
 
 #include "src/handles.h"
 #include "src/interpreter/bytecode-register.h"
 #include "src/interpreter/bytecodes.h"
 #include "src/zone-containers.h"
 
 namespace v8 {
 namespace internal {
 
 class HandlerTable;
 class Isolate;
 
 namespace interpreter {
 
 // A helper class for constructing exception handler tables for the interpreter.
 class HandlerTableBuilder final BASE_EMBEDDED {
  public:
-  HandlerTableBuilder(Isolate* isolate, Zone* zone);
+  explicit HandlerTableBuilder(Zone* zone);
 
   // Builds the actual handler table by copying the current values into a heap
   // object. Any further mutations to the builder won't be reflected.
-  Handle<HandlerTable> ToHandlerTable();
+  Handle<HandlerTable> ToHandlerTable(Isolate* isolate);
 
   // Creates a new handler table entry and returns a {hander_id} identifying the
   // entry, so that it can be referenced by below setter functions.
   int NewHandlerEntry();
 
   // Setter functions that modify certain values within the handler table entry
   // being referenced by the given {handler_id}. All values will be encoded by
   // the resulting {HandlerTable} class when copied into the heap.
   void SetTryRegionStart(int handler_id, size_t offset);
   void SetTryRegionEnd(int handler_id, size_t offset);
   void SetHandlerTarget(int handler_id, size_t offset);
   void SetPrediction(int handler_id, HandlerTable::CatchPrediction prediction);
   void SetContextRegister(int handler_id, Register reg);
 
  private:
   struct Entry {
     size_t offset_start;   // Bytecode offset starting try-region.
     size_t offset_end;     // Bytecode offset ending try-region.
     size_t offset_target;  // Bytecode offset of handler target.
     Register context;      // Register holding context for handler.
                            // Optimistic prediction for handler.
     HandlerTable::CatchPrediction catch_prediction_;
   };
 
-  Isolate* isolate_;
   ZoneVector<Entry> entries_;
 
   DISALLOW_COPY_AND_ASSIGN(HandlerTableBuilder);
 };
 
 }  // namespace interpreter
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_INTERPRETER_HANDLER_TABLE_BUILDER_H_