Change Bool::Get to return a handle instead of a pointer to a raw object.

runtime/vm/object.cc

Index: runtime/vm/object.cc
diff --git a/runtime/vm/object.cc b/runtime/vm/object.cc
index 2a364a82f3ad41a3e9d241f3099dc8f55db95043..f34b16400c55f5e8c73668d34622f152ddf326f6 100644
--- a/runtime/vm/object.cc
+++ b/runtime/vm/object.cc
@@ -9100,7 +9100,7 @@ bool ContextScope::IsFinalAt(intptr_t scope_index) const {
 
 
 void ContextScope::SetIsFinalAt(intptr_t scope_index, bool is_final) const {
-  VariableDescAddr(scope_index)->is_final = Bool::Get(is_final);
+  VariableDescAddr(scope_index)->is_final = Bool::Get(is_final).raw();
 }
 
 
@@ -9110,7 +9110,7 @@ bool ContextScope::IsConstAt(intptr_t scope_index) const {
 
 
 void ContextScope::SetIsConstAt(intptr_t scope_index, bool is_const) const {
-  VariableDescAddr(scope_index)->is_const = Bool::Get(is_const);
+  VariableDescAddr(scope_index)->is_const = Bool::Get(is_const).raw();
 }