Purge unused internalized string accessors.

src/x87/lithium-codegen-x87.cc

Index: src/x87/lithium-codegen-x87.cc
diff --git a/src/x87/lithium-codegen-x87.cc b/src/x87/lithium-codegen-x87.cc
index 8ba73c62367520db89d3d7edb0b57717acec08b1..4116b4656a5e6851f3bc84db4c411982ecc729ac 100644
--- a/src/x87/lithium-codegen-x87.cc
+++ b/src/x87/lithium-codegen-x87.cc
@@ -2671,7 +2671,7 @@ void LCodeGen::EmitClassOfTest(Label* is_true,
   DCHECK(!temp.is(temp2));
   __ JumpIfSmi(input, is_false);
 
-  if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Function"))) {
+  if (String::Equals(isolate()->factory()->Function_string(), class_name)) {
     // Assuming the following assertions, we can use the same compares to test
     // for both being a function type and being in the object type range.
     STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
@@ -2701,7 +2701,7 @@ void LCodeGen::EmitClassOfTest(Label* is_true,
   __ mov(temp, FieldOperand(temp, Map::kConstructorOffset));
   // Objects with a non-function constructor have class 'Object'.
   __ CmpObjectType(temp, JS_FUNCTION_TYPE, temp2);
-  if (class_name->IsOneByteEqualTo(STATIC_ASCII_VECTOR("Object"))) {
+  if (String::Equals(class_name, isolate()->factory()->Object_string())) {
     __ j(not_equal, is_true);
   } else {
     __ j(not_equal, is_false);