Revert 13157, 13145 and 13140: Crankshaft code stubs.

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 6bbe5eb527744e46a64bb791ee8c194e3683253b..ac2e554f85e5112b1a1d72efb0dfe7047eb20969 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -53,7 +53,6 @@ namespace internal {
 class Bootstrapper;
 class CodeGenerator;
 class CodeRange;
-struct CodeStubInterfaceDescriptor;
 class CompilationCache;
 class ContextSlotCache;
 class ContextSwitcher;
@@ -1060,9 +1059,6 @@ class Isolate {
     date_cache_ = date_cache;
   }
 
-  CodeStubInterfaceDescriptor*
-      code_stub_interface_descriptor(int index);
-
   void IterateDeferredHandles(ObjectVisitor* visitor);
   void LinkDeferredHandles(DeferredHandles* deferred_handles);
   void UnlinkDeferredHandles(DeferredHandles* deferred_handles);
@@ -1245,7 +1241,6 @@ class Isolate {
   RegExpStack* regexp_stack_;
   DateCache* date_cache_;
   unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
-  CodeStubInterfaceDescriptor* code_stub_interface_descriptors_;
 
   // The garbage collector should be a little more aggressive when it knows
   // that a context was recently exited.