[builtins] Turn LoadIC_Miss and LoadIC_Slow builtins to TurboFan code stubs.

src/ppc/code-stubs-ppc.cc

Index: src/ppc/code-stubs-ppc.cc
diff --git a/src/ppc/code-stubs-ppc.cc b/src/ppc/code-stubs-ppc.cc
index 6276bc894d78b60dd7396cd5b4d664c4fe1a8b15..ab919c313ede4d668eba1d9155f66525cbf8917b 100644
--- a/src/ppc/code-stubs-ppc.cc
+++ b/src/ppc/code-stubs-ppc.cc
@@ -1372,8 +1372,7 @@ void FunctionPrototypeStub::Generate(MacroAssembler* masm) {
   NamedLoadHandlerCompiler::GenerateLoadFunctionPrototype(masm, receiver, r7,
                                                           r8, &miss);
   __ bind(&miss);
-  PropertyAccessCompiler::TailCallBuiltin(
-      masm, PropertyAccessCompiler::MissBuiltin(Code::LOAD_IC));
+  PropertyAccessCompiler::TailCallMissHandler(masm, Code::LOAD_IC);
 }
 
 
@@ -1404,8 +1403,7 @@ void LoadIndexedStringStub::Generate(MacroAssembler* masm) {
   char_at_generator.GenerateSlow(masm, PART_OF_IC_HANDLER, call_helper);
 
   __ bind(&miss);
-  PropertyAccessCompiler::TailCallBuiltin(
-      masm, PropertyAccessCompiler::MissBuiltin(Code::KEYED_LOAD_IC));
+  PropertyAccessCompiler::TailCallMissHandler(masm, Code::KEYED_LOAD_IC);
 }