Recently, Google made a move to development tools inside chrome browser, Resources guide has been removed and replaced with Enrollment. Only the name has changed, advanced users or developers can still access all the features of a page like frames, images, style sheets, etc by visiting the App dashboard.
Here’s how to open the new Application tab in the development tools.
1. Press Ctrl+Shift+I to open developer tools
2. Click the >> icon and select Application, and check the Frames section at the bottom left.
READ: Firefox 50: Font Preview Re-enabled by Default