Replace HeapType with a non-templated FieldType class.

src/ic/ppc/handler-compiler-ppc.cc

Index: src/ic/ppc/handler-compiler-ppc.cc
diff --git a/src/ic/ppc/handler-compiler-ppc.cc b/src/ic/ppc/handler-compiler-ppc.cc
index b37345bea4357c62457967631010e986c7bd1c32..79e488243200e9958fc988ed5cbdc02be6bee4c8 100644
--- a/src/ic/ppc/handler-compiler-ppc.cc
+++ b/src/ic/ppc/handler-compiler-ppc.cc
@@ -393,8 +393,7 @@ void NamedStoreHandlerCompiler::GenerateConstantCheck(Register map_reg,
   __ bne(miss_label);
 }
 
-
-void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type,
+void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(FieldType* field_type,
                                                         Register value_reg,
                                                         Label* miss_label) {
   Register map_reg = scratch1();
@@ -402,7 +401,7 @@ void NamedStoreHandlerCompiler::GenerateFieldTypeChecks(HeapType* field_type,
   DCHECK(!value_reg.is(map_reg));
   DCHECK(!value_reg.is(scratch));
   __ JumpIfSmi(value_reg, miss_label);
-  HeapType::Iterator<Map> it = field_type->Classes();
+  FieldType::Iterator it = field_type->Classes();
   if (!it.Done()) {
     __ LoadP(map_reg, FieldMemOperand(value_reg, HeapObject::kMapOffset));
     Label do_store;