Add webdriver endpoint to send custom debugger commands

chrome/test/chromedriver/client/chromedriver.py

Index: chrome/test/chromedriver/client/chromedriver.py
diff --git a/chrome/test/chromedriver/client/chromedriver.py b/chrome/test/chromedriver/client/chromedriver.py
index acde88ef3820790c9b048ec0e36df637f6984538..de7fa669e7fa71e660e8d1f17c60c8300df41a38 100644
--- a/chrome/test/chromedriver/client/chromedriver.py
+++ b/chrome/test/chromedriver/client/chromedriver.py
@@ -114,7 +114,8 @@ class ChromeDriver(object):
                mobile_emulation=None, experimental_options=None,
                download_dir=None, network_connection=None,
                send_w3c_capability=None, send_w3c_request=None,
-               page_load_strategy=None, unexpected_alert_behaviour=None):
+               page_load_strategy=None, unexpected_alert_behaviour=None,
+               devtools_events_to_log=None):
     self._executor = command_executor.CommandExecutor(server_url)
 
     options = {}
@@ -164,7 +165,8 @@ class ChromeDriver(object):
 
     if logging_prefs:
       assert type(logging_prefs) is dict
-      log_types = ['client', 'driver', 'browser', 'server', 'performance']
+      log_types = ['client', 'driver', 'browser', 'server', 'performance',
+        'devtools']
       log_levels = ['ALL', 'DEBUG', 'INFO', 'WARNING', 'SEVERE', 'OFF']
       for log_type, log_level in logging_prefs.iteritems():
         assert log_type in log_types
@@ -172,6 +174,10 @@ class ChromeDriver(object):
     else:
       logging_prefs = {}
 
+    if devtools_events_to_log:
+      assert type(devtools_events_to_log) is list
+      options['devToolsEventsToLog'] = devtools_events_to_log
+
     download_prefs = {}
     if download_dir:
       if 'prefs' not in options:
@@ -495,6 +501,14 @@ class ChromeDriver(object):
     params = {'parameters': {'type': connection_type}}
     return self.ExecuteCommand(Command.SET_NETWORK_CONNECTION, params)
 
+  def SendCommand(self, cmd, cmd_params):
+    params = {'parameters': {'cmd': cmd, 'params': cmd_params}};
+    return self.ExecuteCommand(Command.SEND_COMMAND, params)
+
+  def SendCommandAndGetResult(self, cmd, cmd_params):
+    params = {'cmd': cmd, 'params': cmd_params};
+    return self.ExecuteCommand(Command.SEND_COMMAND_AND_GET_RESULT, params)
+
   def GetScreenOrientation(self):
     screen_orientation = self.ExecuteCommand(Command.GET_SCREEN_ORIENTATION)
     return {