Move deopt_id and related helpers/definitions from Isolate to Thread

runtime/vm/flow_graph_range_analysis.cc

Index: runtime/vm/flow_graph_range_analysis.cc
diff --git a/runtime/vm/flow_graph_range_analysis.cc b/runtime/vm/flow_graph_range_analysis.cc
index 9016d1c862629268289e882c703eb94196b59a5f..35a7a5d80aaafd548ca80891de34ad5b35a18c1e 100644
--- a/runtime/vm/flow_graph_range_analysis.cc
+++ b/runtime/vm/flow_graph_range_analysis.cc
@@ -1082,7 +1082,7 @@ class BoundsCheckGeneralizer {
       CheckArrayBoundInstr* precondition = new CheckArrayBoundInstr(
           new Value(max_smi),
           new Value(non_positive_symbols[i]),
-          Isolate::kNoDeoptId);
+          Thread::kNoDeoptId);
       precondition->mark_generalized();
       precondition = scheduler_.Emit(precondition, check);
       if (precondition == NULL) {
@@ -1097,7 +1097,7 @@ class BoundsCheckGeneralizer {
     CheckArrayBoundInstr* new_check = new CheckArrayBoundInstr(
           new Value(UnwrapConstraint(check->length()->definition())),
           new Value(upper_bound),
-          Isolate::kNoDeoptId);
+          Thread::kNoDeoptId);
     new_check->mark_generalized();
     if (new_check->IsRedundant(array_length)) {
       if (FLAG_trace_range_analysis) {
@@ -1138,7 +1138,7 @@ class BoundsCheckGeneralizer {
     return new BinarySmiOpInstr(op_kind,
                                 new Value(left),
                                 new Value(right),
-                                Isolate::kNoDeoptId);
+                                Thread::kNoDeoptId);
   }