Wobbly Zoom in Chrome Beta/Canary

[mourner]

Chrome Beta and Canary started to get wobbly zoom animation on tile layers. Vectors, markers and image overlays are fine though, so I guess we need to hurry with refactoring tiles animation from Map.ZoomAnimation.js into TileLayer.js (so that each layer has its own proper animation that's fired on zoomstart) before Chrome Beta becomes Stable.

[mourner]

@danzel any thoughts? I still get confused about chained transforms transition logic, you got deeper with this topic.

[danzel]

Will take a look later today :)

[danzel]

PR sent to fix this and remove the translate(0,0) hack from other browsers it fixes that too :-)
Should be fairly easy to apply the same change to the stable branch.

Tested on:
Chrome canary & stable
iPad iOS5
Firefox
Opera
IE10

[mynameistechno]

You guys rock!