Use source position table for crankshaft code.

src/crankshaft/arm64/lithium-codegen-arm64.cc

Index: src/crankshaft/arm64/lithium-codegen-arm64.cc
diff --git a/src/crankshaft/arm64/lithium-codegen-arm64.cc b/src/crankshaft/arm64/lithium-codegen-arm64.cc
index 8df6580ae752b753504990af3add787578840226..a593c50dfb2f19beb03509a8c7789a93f7f05ab4 100644
--- a/src/crankshaft/arm64/lithium-codegen-arm64.cc
+++ b/src/crankshaft/arm64/lithium-codegen-arm64.cc
@@ -445,12 +445,6 @@ void LCodeGen::CallRuntimeFromDeferred(Runtime::FunctionId id,
 }
 
 
-void LCodeGen::RecordAndWritePosition(int position) {
-  if (position == RelocInfo::kNoPosition) return;
-  masm()->positions_recorder()->RecordPosition(position);
-}
-
-
 void LCodeGen::RecordSafepointWithLazyDeopt(LInstruction* instr,
                                             SafepointMode safepoint_mode) {
   if (safepoint_mode == RECORD_SIMPLE_SAFEPOINT) {
@@ -824,6 +818,9 @@ void LCodeGen::FinishCode(Handle<Code> code) {
   DCHECK(is_done());
   code->set_stack_slots(GetTotalFrameSlotCount());
   code->set_safepoint_table_offset(safepoints_.GetCodeOffset());
+  Handle<ByteArray> source_positions =
+      source_position_table_builder_.ToSourcePositionTable();
+  code->set_source_position_table(*source_positions);
   PopulateDeoptimizationData(code);
 }