Add unit_price_company Function field on stock move

issue9401
review290341002

move.py

@@ -107,11 +107,10 @@ class Move(metaclass=PoolMeta):
                 'cost_price', **self._cost_price_pattern)
 
         # Compute average cost price
-        unit_price = self.unit_price
-        self.unit_price = Uom.compute_price(
-            self.product.default_uom, cost_price, self.uom)
+        self.unit_price_company, unit_price_company = (
+            cost_price, self.unit_price_company)
         average_cost_price = self._compute_product_cost_price('out')
-        self.unit_price = unit_price
+        self.unit_price_company = unit_price_company
 
         if cost_price:
             cost_price = round_price(cost_price)

product.py

@@ -152,12 +152,7 @@ class Product(metaclass=PoolMeta):
             for move, move_qty in fifo_moves:
                 consumed_qty += move_qty
                 if move.from_location.type in {'supplier', 'production'}:
-                    with Transaction().set_context(date=move.effective_date):
-                        unit_price = Currency.compute(
-                            move.currency, move.unit_price,
-                            move.company.currency, round=False)
-                    unit_price = Uom.compute_price(
-                        move.uom, unit_price, move.product.default_uom)
+                    unit_price = move.unit_price_company
                 else:
                     unit_price = move.cost_price or 0
                 cost_price += unit_price * Decimal(str(move_qty))