Implement handlified String::Equals and Name::Equals.

src/arm/lithium-codegen-arm.cc

Index: src/arm/lithium-codegen-arm.cc
diff --git a/src/arm/lithium-codegen-arm.cc b/src/arm/lithium-codegen-arm.cc
index b20c0e557de0da3ffef1ea2c910ee07e5c959c50..34d98b7ddf7a1779f90f9cef19809b0664bf6e79 100644
--- a/src/arm/lithium-codegen-arm.cc
+++ b/src/arm/lithium-codegen-arm.cc
@@ -5496,13 +5496,14 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
                                  Handle<String> type_name) {
   Condition final_branch_condition = kNoCondition;
   Register scratch = scratch0();
-  if (type_name->Equals(heap()->number_string())) {
+  Factory* factory = isolate()->factory();
+  if (String::Equals(type_name, factory->number_string())) {
     __ JumpIfSmi(input, true_label);
     __ ldr(scratch, FieldMemOperand(input, HeapObject::kMapOffset));
     __ CompareRoot(scratch, Heap::kHeapNumberMapRootIndex);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->string_string())) {
+  } else if (String::Equals(type_name, factory->string_string())) {
     __ JumpIfSmi(input, false_label);
     __ CompareObjectType(input, scratch, no_reg, FIRST_NONSTRING_TYPE);
     __ b(ge, false_label);
@@ -5510,22 +5511,23 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
     __ tst(scratch, Operand(1 << Map::kIsUndetectable));
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->symbol_string())) {
+  } else if (String::Equals(type_name, factory->symbol_string())) {
     __ JumpIfSmi(input, false_label);
     __ CompareObjectType(input, scratch, no_reg, SYMBOL_TYPE);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->boolean_string())) {
+  } else if (String::Equals(type_name, factory->boolean_string())) {
     __ CompareRoot(input, Heap::kTrueValueRootIndex);
     __ b(eq, true_label);
     __ CompareRoot(input, Heap::kFalseValueRootIndex);
     final_branch_condition = eq;
 
-  } else if (FLAG_harmony_typeof && type_name->Equals(heap()->null_string())) {
+  } else if (FLAG_harmony_typeof &&
+             String::Equals(type_name, factory->null_string())) {
     __ CompareRoot(input, Heap::kNullValueRootIndex);
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->undefined_string())) {
+  } else if (String::Equals(type_name, factory->undefined_string())) {
     __ CompareRoot(input, Heap::kUndefinedValueRootIndex);
     __ b(eq, true_label);
     __ JumpIfSmi(input, false_label);
@@ -5535,7 +5537,7 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
     __ tst(scratch, Operand(1 << Map::kIsUndetectable));
     final_branch_condition = ne;
 
-  } else if (type_name->Equals(heap()->function_string())) {
+  } else if (String::Equals(type_name, factory->function_string())) {
     STATIC_ASSERT(NUM_OF_CALLABLE_SPEC_OBJECT_TYPES == 2);
     Register type_reg = scratch;
     __ JumpIfSmi(input, false_label);
@@ -5544,7 +5546,7 @@ Condition LCodeGen::EmitTypeofIs(Label* true_label,
     __ cmp(type_reg, Operand(JS_FUNCTION_PROXY_TYPE));
     final_branch_condition = eq;
 
-  } else if (type_name->Equals(heap()->object_string())) {
+  } else if (String::Equals(type_name, factory->object_string())) {
     Register map = scratch;
     __ JumpIfSmi(input, false_label);
     if (!FLAG_harmony_typeof) {