Define user activation and added references in getGamepads and gamepa…

[knyg]

…dConnected.

Closes #72

The following tasks have been completed:

• Modified Web platform tests (link to pull request)

Implementation commitment:

• WebKit (https://bugs.webkit.org/show_bug.cgi?id=)
• Chromium (https://bugs.chromium.org/p/chromium/issues/detail?id=)
• Gecko (https://bugzilla.mozilla.org/show_bug.cgi?id=)

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Preview | Diff

[marcoscaceres]

This is capturing the right idea, but I think we probably want to layer this onto of HTML's "triggered by user activation". I'll propose some alternative wording.

[marcoscaceres]

Note to self: add "triggered by gamepad activation".

[marcoscaceres]

This is generally a good idea. Talking with @nondebug and other folks on the call, it would be good if it generated a true activation event as part of HTML... that could be used for going fullscreen.

[marcoscaceres]

(I suggest we close this pull request and send something new that covers the use cases that we are interested in)