Support new Cast command added to Chrome Devtools (#10150)

* Support new Cast command added to Chrome Devtools

* Update remote_connection.py

* Update remote_connection.py

* Update webdriver.py

Author: cliffordcheng

py/selenium/webdriver/chromium/remote_connection.py

@@ -31,5 +31,6 @@ def __init__(self, remote_server_addr, vendor_prefix, browser_name, keep_alive=T
         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))
         self._commands['setSinkToUse'] = ('POST', '/session/$sessionId/{}/cast/set_sink_to_use'.format(vendor_prefix))
+        self._commands['startDesktopMirroring'] = ('POST', '/session/$sessionId/{}/cast/start_desktop_mirroring'.format(vendor_prefix))
         self._commands['startTabMirroring'] = ('POST', '/session/$sessionId/{}/cast/start_tab_mirroring'.format(vendor_prefix))
         self._commands['stopCasting'] = ('POST', '/session/$sessionId/{}/cast/stop_casting'.format(vendor_prefix))

py/selenium/webdriver/chromium/webdriver.py

@@ -199,6 +199,15 @@ def set_sink_to_use(self, sink_name: str) -> str:
         """
         return self.execute('setSinkToUse', {'sinkName': sink_name})
 
+    def start_desktop_mirroring(self, sink_name: str) -> str:
+        """
+        Starts a desktop mirroring session on a specific receiver target.
+
+        :Args:
+         - sink_name: Name of the sink to use as the target.
+        """
+        return self.execute('startDesktopMirroring', {'sinkName': sink_name})
+
     def start_tab_mirroring(self, sink_name: str) -> str:
         """
         Starts a tab mirroring session on a specific receiver target.