See Observatory -> DevTools Tracking Issue.
The DevTools timeline viewer currently support the following navigation controls:

However, these aren't consistent with controls found in other common timeline viewers (e.g., Chrome Tracing Tool):

In particular, scroll-to-zoom behavior is quite jarring when coming from existing tools. DevTools should, at the very least, provide an option to swap scroll wheel behaviors (e.g., alt + scroll to zoom, scroll to pan).
See Observatory -> DevTools Tracking Issue.
The DevTools timeline viewer currently support the following navigation controls:
However, these aren't consistent with controls found in other common timeline viewers (e.g., Chrome Tracing Tool):
In particular, scroll-to-zoom behavior is quite jarring when coming from existing tools. DevTools should, at the very least, provide an option to swap scroll wheel behaviors (e.g., alt + scroll to zoom, scroll to pan).