Backport Safari fix for input changes

[jquense]

fixes#9956

[gaearon]

Can you verify this works on Safari?

[jquense]

I can't right this moment, I yanked this straight from master (#6648) so presumably FB would be broken still if it didn't? :P

[gaearon]

That's my thinking too. 😄 Let's get in. Thanks.

[gaearon]

(I'll still wait for CI)

[gaearon]

Eh, seems like I broke CI with lint 😞

This is okay to merge:

Received return code 1 from: ./node_modules/.bin/gulp lint
Received return code 0 from: node ./scripts/prettier/index
Received return code 0 from: ./node_modules/.bin/gulp flow
Received return code 0 from: ./node_modules/.bin/grunt build
Received return code 0 from: ./scripts/circleci/test_extract_errors.sh
Received return code 0 from: ./scripts/circleci/track_stats.sh
Received return code 0 from: node ./addons/test

[blling]

Some brower do not support hasOwnProperty on DOM node, need check node.hasOwnProperty if it is defined first here :(

[nhunzaker]

@blling Yikes! Do you know in which browsers this is the case?

[blling]

I found IE8 for now... I know React has dropped support of IE8~~, but if you could use Object.hasOwnProperty.call() is a better way.

[blling]

@nhunzaker do you think the issue of hasOwnProperty should be fix in React15.6.x?

[jquense]

I don't think so, we are actively removing ie8 specific code. I don't think it makes sense to cover that case just here

[nhunzaker]

Yeah; that's where I'm at too.

[blling]

o_o