Consider merging Drop NotEnumerable for the on* event handler IDL attributes https://src.chromium.org/viewvc/blink?revision=159721&view=revision Drop NotEnumerable for the on* event handler IDL attributes (again) https://chromium.googlesource.com/chromium/blink/+/d65538a737891924a8a988184b2bb456a8000a9e Handle the onerror content attribute for <body> and <frameset> https://chromium.googlesource.com/chromium/blink/+/3f0fc2dbb5fe67415078555b409a1223ad2d26bb
https://chromium.googlesource.com/chromium/blink/+/9dca51e67c9cc05ab47dc6cf18e7d506371980ba