[ic][stubs] Move more IC-related methods from CSA to AccessorAssembler.

src/ic/accessor-assembler-impl.h

Index: src/ic/accessor-assembler-impl.h
diff --git a/src/ic/accessor-assembler-impl.h b/src/ic/accessor-assembler-impl.h
index e0975de3c0aabdbf33286c30b5b71d91c708beff..a49ede06bc5f5d4d40a3d2d22b6a12ab9132a8d9 100644
--- a/src/ic/accessor-assembler-impl.h
+++ b/src/ic/accessor-assembler-impl.h
@@ -160,6 +160,16 @@ class AccessorAssemblerImpl : public CodeStubAssembler {
 
   // Low-level helpers.
 
+  Node* PrepareValueForWrite(Node* value, Representation representation,
+                             Label* bailout);
+
+  // Extends properties backing store by JSObject::kFieldsAdded elements.
+  void ExtendPropertiesBackingStore(Node* object);
+
+  void StoreNamedField(Node* object, Node* offset, bool is_inobject,
+                       Representation representation, Node* value,
+                       bool transition_to_field);
+
   void EmitFastElementsBoundsCheck(Node* object, Node* elements,
                                    Node* intptr_index,
                                    Node* is_jsarray_condition, Label* miss);