Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index 47b0a856332e24cec0b4ff7e8ab0666d20ca9dc2..daa865400bc2d61dc1ae2bd8de7b8897fadc3e90 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -911,10 +911,10 @@ MaybeObject* Accessors::FunctionGetCaller(Isolate* isolate,
   if (caller->shared()->bound()) {
     return isolate->heap()->null_value();
   }
-  // Censor if the caller is not a classic mode function.
+  // Censor if the caller is not a sloppy mode function.
   // Change from ES5, which used to throw, see:
   // https://bugs.ecmascript.org/show_bug.cgi?id=310
-  if (!caller->shared()->is_classic_mode()) {
+  if (!caller->shared()->is_sloppy_mode()) {
     return isolate->heap()->null_value();
   }