Avoid depending on WebTransformationMatrix::toTransform

Avoid depending on WebTransformationMatrix::toTransform

In order to stop aliasing memory for WebTransformationMatrix with a WebCore type
we need to make storage for that class private which means we can't provide any
conversions to gfx::Transform in WebTransformationMatrix.h. This does explicit
per-member conversion on the chromium side.  The conversion in
cc/layer_animation_controller.cc is going away real soon now, so I copied the
function there instead of trying to find a place where both could depend on it.

BUG=


Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=175061

[danakj, 2013-01-03 21:08:40]

LGTM

https://codereview.chromium.org/11762003/diff/2001/webkit/compositor_bindings...
File webkit/compositor_bindings/web_layer_impl.cc (right):

https://codereview.chromium.org/11762003/diff/2001/webkit/compositor_bindings...
webkit/compositor_bindings/web_layer_impl.cc:27: gfx::Transform transform;
Can you throw a TODO here to use the initialized constructor once it exists?

[danakj, 2013-01-03 21:14:17]

> Can you throw a TODO here to use the initialized constructor once it exists?

*uninitialized* I mean..

[commit-bot: I haz the power, 2013-01-03 21:23:28]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/jamesr@chromium.org/11762003/6001

[commit-bot: I haz the power, 2013-01-04 00:09:39]

Change committed as 175061