Rename EnterDebugger to DebugScope.

src/runtime.cc

Index: src/runtime.cc
diff --git a/src/runtime.cc b/src/runtime.cc
index 40f9a3de923b1d370c6206b0cfd48a3a86d491f6..6b1a6a840a3199fb6b8a9766aa17c7d48914e853 100644
--- a/src/runtime.cc
+++ b/src/runtime.cc
@@ -10840,7 +10840,7 @@ RUNTIME_FUNCTION(Runtime_DebugGetPropertyDetails) {
   // could have the assumption that its own native context is the current
   // context and not some internal debugger context.
   SaveContext save(isolate);
-  if (isolate->debug()->is_entered()) {
+  if (isolate->debug()->in_debug_scope()) {
     isolate->set_context(*isolate->debug()->debugger_entry()->GetContext());
   }
 
@@ -13622,7 +13622,7 @@ RUNTIME_FUNCTION(Runtime_ExecuteInDebugContext) {
                                    0,
                                    NULL);
   } else {
-    EnterDebugger enter_debugger(isolate);
+    DebugScope debug_scope(isolate->debug());
     maybe_result = Execution::Call(isolate,
                                    function,
                                    isolate->global_object(),