fix debug tests (#257)

 Fix Debug Tests.

Author: Vasil Hristov

core/utils/chrome/chrome_dev_tools.py

@@ -234,7 +234,7 @@ def doubleclick_line(self, text):
         assert line is not None, "Failed to find line with text " + text
         x, y = self.chrome.get_absolute_center(line)
         pyautogui.doubleClick(x, y)
-        sleep(1)
+        sleep(2)
         Log.info('Double click line with text "{0}".'.format(text))
 
     def __clean_console(self):
@@ -291,6 +291,8 @@ def add_watch_expression(self, expression, expected_result=None):
         for _ in range(1, 25):
             actions.send_keys(Keys.BACKSPACE).perform()
         actions.send_keys(expression).perform()
+        sleep(1)
+        actions.send_keys(Keys.ENTER).perform()
         sleep(3)
         Log.info('Add watch expression: {0}'.format(expression))