Getting started with google-chrome-devtools
Search by filename
While in the sources tab use CTRL+O (⌘+O for Mac) to search by filename.
Accessing Chrome Dev Tools
While chrome browser is open to any tab (except welcome tabs) you have three options to open Chrome Dev Tools:
Keyboard: Type command ⌘+option+i
Browser Menu: Click ‘Menu’ > ‘More Tools’ > ‘Developer Tools’
Program Menu (at top of your screen): Click ‘View’ > ‘Developer’ > ‘Developer Tools’