Renamed "symbols" to "internalized strings" throughout the code base,

src/ast.h

Index: src/ast.h
diff --git a/src/ast.h b/src/ast.h
index a0a7a7320649fdff523c509f9f49e7760b4b3618..740aa442936160709f7e23586ee2a910b6827aaa 100644
--- a/src/ast.h
+++ b/src/ast.h
@@ -968,7 +968,7 @@ class CaseClause: public ZoneObject {
   TypeFeedbackId CompareId() { return compare_id_; }
   void RecordTypeFeedback(TypeFeedbackOracle* oracle);
   bool IsSmiCompare() { return compare_type_ == SMI_ONLY; }
-  bool IsSymbolCompare() { return compare_type_ == SYMBOL_ONLY; }
+  bool IsNameCompare() { return compare_type_ == NAME_ONLY; }
   bool IsStringCompare() { return compare_type_ == STRING_ONLY; }
   bool IsObjectCompare() { return compare_type_ == OBJECT_ONLY; }
 
@@ -980,7 +980,7 @@ class CaseClause: public ZoneObject {
   enum CompareTypeFeedback {
     NONE,
     SMI_ONLY,
-    SYMBOL_ONLY,
+    NAME_ONLY,
     STRING_ONLY,
     OBJECT_ONLY
   };
@@ -1171,7 +1171,7 @@ class Literal: public Expression {
   DECLARE_NODE_TYPE(Literal)
 
   virtual bool IsPropertyName() {
-    if (handle_->IsSymbol()) {
+    if (handle_->IsInternalizedString()) {
       uint32_t ignored;
       return !String::cast(*handle_)->AsArrayIndex(&ignored);
     }