[py] Raise NotImplementedError when deleting downloads in driver subclasses

Author: cgoldberg

py/selenium/webdriver/chromium/webdriver.py

@@ -230,3 +230,6 @@ def download_file(self, *args, **kwargs):
 
     def get_downloadable_files(self, *args, **kwargs):
         raise NotImplementedError
+
+    def delete_downloadable_files(self, *args, **kwargs):
+        raise NotImplementedError

py/selenium/webdriver/ie/webdriver.py

@@ -80,3 +80,6 @@ def download_file(self, *args, **kwargs):
 
     def get_downloadable_files(self, *args, **kwargs):
         raise NotImplementedError
+
+    def delete_downloadable_files(self, *args, **kwargs):
+        raise NotImplementedError

py/selenium/webdriver/safari/webdriver.py

@@ -113,3 +113,6 @@ def download_file(self, *args, **kwargs):
 
     def get_downloadable_files(self, *args, **kwargs):
         raise NotImplementedError
+
+    def delete_downloadable_files(self, *args, **kwargs):
+        raise NotImplementedError

py/selenium/webdriver/webkitgtk/webdriver.py

@@ -64,3 +64,6 @@ def download_file(self, *args, **kwargs):
 
     def get_downloadable_files(self, *args, **kwargs):
         raise NotImplementedError
+
+    def delete_downloadable_files(self, *args, **kwargs):
+        raise NotImplementedError

py/selenium/webdriver/wpewebkit/webdriver.py

@@ -64,3 +64,6 @@ def download_file(self, *args, **kwargs):
 
     def get_downloadable_files(self, *args, **kwargs):
         raise NotImplementedError
+
+    def delete_downloadable_files(self, *args, **kwargs):
+        raise NotImplementedError