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

src/builtins.cc

Index: src/builtins.cc
diff --git a/src/builtins.cc b/src/builtins.cc
index 07817fe8c0899444decbddebeb73acd90d6a5e6c..ea6bd48ed9e586f6060633f60c037b8cd486a5f6 100644
--- a/src/builtins.cc
+++ b/src/builtins.cc
@@ -5185,11 +5185,6 @@ BUILTIN(HandleApiCallAsConstructor) {
 }
 
 
-static void Generate_LoadIC_Miss(MacroAssembler* masm) {
-  LoadIC::GenerateMiss(masm);
-}
-
-
 static void Generate_LoadIC_Normal(MacroAssembler* masm) {
   LoadIC::GenerateNormal(masm);
 }
@@ -5200,11 +5195,6 @@ static void Generate_LoadIC_Getter_ForDeopt(MacroAssembler* masm) {
 }
 
 
-static void Generate_LoadIC_Slow(MacroAssembler* masm) {
-  LoadIC::GenerateRuntimeGetProperty(masm);
-}
-
-
 static void Generate_KeyedLoadIC_Slow(MacroAssembler* masm) {
   KeyedLoadIC::GenerateRuntimeGetProperty(masm);
 }