Avoid accessing Isolate in source position logging.

src/crankshaft/lithium-codegen.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/crankshaft/lithium-codegen.h"
 
 #include <sstream>
 
 #if V8_TARGET_ARCH_IA32
 #include "src/crankshaft/ia32/lithium-ia32.h"  // NOLINT
@@ skipping 45 matching lines @@
       status_(UNUSED),
       current_block_(-1),
       current_instruction_(-1),
       instructions_(chunk->instructions()),
       deoptimizations_(4, info->zone()),
       deoptimization_literals_(8, info->zone()),
       translations_(info->zone()),
       inlined_function_count_(0),
       last_lazy_deopt_pc_(0),
       osr_pc_offset_(-1),
-      source_position_table_builder_(info->isolate(), info->zone(),
+      source_position_table_builder_(info->zone(),
                                      info->SourcePositionRecordingMode()) {}
 
 bool LCodeGenBase::GenerateBody() {
   DCHECK(is_generating());
   bool emit_instructions = true;
   LCodeGen* codegen = static_cast<LCodeGen*>(this);
   for (current_instruction_ = 0;
        !is_aborted() && current_instruction_ < instructions_->length();
        current_instruction_++) {
     LInstruction* instr = instructions_->at(current_instruction_);
@@ skipping 296 matching lines @@
 
 Deoptimizer::DeoptInfo LCodeGenBase::MakeDeoptInfo(
     LInstruction* instr, DeoptimizeReason deopt_reason, int deopt_id) {
   Deoptimizer::DeoptInfo deopt_info(instr->hydrogen_value()->position(),
                                     deopt_reason, deopt_id);
   return deopt_info;
 }
 
 }  // namespace internal
 }  // namespace v8