[the8472]

That justifies adding the new API, it does not explain removing the old capabilities. They could nudge extension developers to try the new API by adding some "extension X may slow down page loads" warnings somewhere if they don't use it.

[rajeshmr]

> It does not explain removing the old capabilities

Very true! Especially if the network impact is of the order of sub-milliseconds.

[tyingq]

It's also likely that the net gain in performance by blocking resources with heuristics (that wouldn't be blocked by a simple pattern) outweighs any loss. At least for many websites.

[saagarjha]

I'm fine with that.

[rajeshmr]

Good for you. :) To each his own.