d3c9c392_esting___The_Chromium_Projects__Expected_Result
[Testcase] Processes associated with a single process ID are all killed by ending that process [Steps] Launch Google Chrome with a new session. Enter any URL in the address bar (eg. www.google.com) Navigate to any other sub-domain through the main page by Ctrl+Clicking the link, which opens the sub-domain in a new tab. Press Shift+Esc to launch the Chrome Task Manager. There are two processes sharing a process ID in the Chrome Task Manager. Select the process ID that is shared. Click End process. [Expected Result] 
All the processes associated with that single process ID are not seen in Chrome's Task Manager and a sad face is displayed in all the tabs associated with that process ID
Multi-process Architecture: Basic Testing - The Chromium Projects
Expected Result