[py] implement chromium specific endpoint for deleting network condit…

…ions

py/selenium/webdriver/chromium/remote_connection.py

@@ -25,6 +25,7 @@ def __init__(self, remote_server_addr, vendor_prefix, browser_name, keep_alive=T
         self._commands["launchApp"] = ('POST', '/session/$sessionId/chromium/launch_app')
         self._commands["setNetworkConditions"] = ('POST', '/session/$sessionId/chromium/network_conditions')
         self._commands["getNetworkConditions"] = ('GET', '/session/$sessionId/chromium/network_conditions')
+        self._commands["deleteNetworkConditions"] = ('DELETE', '/session/$sessionId/chromium/network_conditions')
         self._commands['executeCdpCommand'] = ('POST', '/session/$sessionId/{}/cdp/execute'.format(vendor_prefix))
         self._commands['getSinks'] = ('GET', '/session/$sessionId/{}/cast/get_sinks'.format(vendor_prefix))
         self._commands['getIssueMessage'] = ('GET', '/session/$sessionId/{}/cast/get_issue_message'.format(vendor_prefix))

py/selenium/webdriver/chromium/webdriver.py

@@ -139,6 +139,12 @@ def set_network_conditions(self, **network_conditions) -> NoReturn:
             'network_conditions': network_conditions
         })
 
+    def delete_network_conditions(self) -> NoReturn:
+        """
+        Resets Chromium network emulation settings.
+        """
+        self.execute("deleteNetworkConditions")
+
     def execute_cdp_cmd(self, cmd: str, cmd_args: dict):
         """
         Execute Chrome Devtools Protocol command and get returned result

py/test/selenium/webdriver/chrome/chrome_network_emulation_tests.py

@@ -14,7 +14,9 @@
 # KIND, either express or implied.  See the License for the
 # specific language governing permissions and limitations
 # under the License.
+import pytest
 
+from selenium.common.exceptions import WebDriverException
 from selenium.webdriver import Chrome
 
 
@@ -29,3 +31,6 @@ def test_network_conditions_emulation():
     assert conditions['latency'] == 56
     assert conditions['download_throughput'] == 789
     assert conditions['upload_throughput'] == 789
+    driver.delete_network_conditions()
+    with pytest.raises(WebDriverException):
+        driver.get_network_conditions()