mark@garbage bash$ nm -nU '/Applications/Google Chrome Canary.app/Contents/Versions/59.0.3048.0/Google Chrome Framework.framework/Google Chrome Framework'
0000000000002100 T _ChromeAppModeStart_v4
0000000000003030 T _KeychainReauthorizeIfNeededAtUpdate
0000000000003070 T _ChromeMain
0000000006989758 S _CIDetectorTypeQRCode
0000000006989760 S _NSUserActivityTypeBrowsingWeb
0000000006989768 S _NSAppearanceNameVibrantDark

The three text symbols are fine. There are reasons for them to show up.

The three data symbols are not. We don’t need to expose them from our framework.

These are coming from sdk_forward_declarations.{h,mm}:

https://chromium.googlesource.com/chromium/src/+/9eba8ffcc405012f235a5bfb5ce49485a746b379/base/mac/sdk_forward_declarations.h#71
https://chromium.googlesource.com/chromium/src/+/9eba8ffcc405012f235a5bfb5ce49485a746b379/base/mac/sdk_forward_declarations.mm

Providing our own declarations and definitions of these for cases where they’re missing from the SDK or missing at runtime is fine. But let’s not expose them from our framework.