Revert "Handle non-JSObject heap objects using slow-path IC stub guarded by the map."

src/stub-cache.h

Index: src/stub-cache.h
diff --git a/src/stub-cache.h b/src/stub-cache.h
index 63cb42b46e5d4402c49732db130d0698343c0829..c2ff18acc1a5f3428e8ee3772f0d1d38dec624a4 100644
--- a/src/stub-cache.h
+++ b/src/stub-cache.h
@@ -104,20 +104,20 @@ class StubCache {
                                 Code::StubType type,
                                 StrictModeFlag strict_mode);
 
-  Handle<Code> ComputeMonomorphicLoadIC(Handle<HeapObject> receiver,
+  Handle<Code> ComputeMonomorphicLoadIC(Handle<JSObject> receiver,
                                         Handle<Code> handler,
                                         Handle<Name> name);
 
-  Handle<Code> ComputeMonomorphicKeyedLoadIC(Handle<HeapObject> receiver,
+  Handle<Code> ComputeMonomorphicKeyedLoadIC(Handle<JSObject> receiver,
                                              Handle<Code> handler,
                                              Handle<Name> name);
 
-  Handle<Code> ComputeMonomorphicStoreIC(Handle<HeapObject> receiver,
+  Handle<Code> ComputeMonomorphicStoreIC(Handle<JSObject> receiver,
                                          Handle<Code> handler,
                                          Handle<Name> name,
                                          StrictModeFlag strict_mode);
 
-  Handle<Code> ComputeMonomorphicKeyedStoreIC(Handle<HeapObject> receiver,
+  Handle<Code> ComputeMonomorphicKeyedStoreIC(Handle<JSObject> receiver,
                                               Handle<Code> handler,
                                               Handle<Name> name,
                                               StrictModeFlag strict_mode);