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

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index 5e3795ce69386d7ca7d3689d082a3e7cff16de93..a4ac84a966e942f4997ffefaf60fd2ec3a728df7 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -296,8 +296,8 @@ void ICCompareStub::AddToSpecialCache(Handle<Code> new_object) {
   Factory* factory = isolate->factory();
   return Map::UpdateCodeCache(known_map_,
                               strict() ?
-                                  factory->strict_compare_ic_symbol() :
-                                  factory->compare_ic_symbol(),
+                                  factory->strict_compare_ic_string() :
+                                  factory->compare_ic_string(),
                               new_object);
 }
 
@@ -311,8 +311,8 @@ bool ICCompareStub::FindCodeInSpecialCache(Code** code_out, Isolate* isolate) {
   Handle<Object> probe(
       known_map_->FindInCodeCache(
         strict() ?
-            *factory->strict_compare_ic_symbol() :
-            *factory->compare_ic_symbol(),
+            *factory->strict_compare_ic_string() :
+            *factory->compare_ic_string(),
         flags));
   if (probe->IsCode()) {
     *code_out = Code::cast(*probe);
@@ -373,8 +373,8 @@ void ICCompareStub::Generate(MacroAssembler* masm) {
     case CompareIC::STRING:
       GenerateStrings(masm);
       break;
-    case CompareIC::SYMBOL:
-      GenerateSymbols(masm);
+    case CompareIC::INTERNALIZED_STRING:
+      GenerateInternalizedStrings(masm);
       break;
     case CompareIC::OBJECT:
       GenerateObjects(masm);