Adds function to invert a transform to ui::Transform

Adds function to invert a transform to ui::Transform
Required for http://codereview.chromium.org/8368013/

BUG= None
TEST= None

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=106992

[sky, 2011-10-24 16:45:05]

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.cc
File ui/gfx/transform.cc (right):

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.cc#newcode106
ui/gfx/transform.cc:106: return transform->matrix_.invert(&transform->matrix_);
Am I missing something. This isn't using anything from 'this'.

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.h
File ui/gfx/transform.h (right):

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.h#newcode72
ui/gfx/transform.h:72: // Inverts the transform which is passed in. Returns true
if successful;
; -> .

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.h#newcode73
ui/gfx/transform.h:73: bool GetInverse(Transform* transform);
const?

[pkotwicz, 2011-10-24 19:17:13]

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.cc
File ui/gfx/transform.cc (right):

http://codereview.chromium.org/8383006/diff/1/ui/gfx/transform.cc#newcode106
ui/gfx/transform.cc:106: return transform->matrix_.invert(&transform->matrix_);
Thanks for pointing this out. Fixed

[sky, 2011-10-24 21:08:59]

LGTM

http://codereview.chromium.org/8383006/diff/5001/ui/gfx/transform.h
File ui/gfx/transform.h (right):

http://codereview.chromium.org/8383006/diff/5001/ui/gfx/transform.h#newcode72
ui/gfx/transform.h:72: // Inverts the transform which is passed in. Returns true
if successful.
This description is a bit misleading. I think you mean:
Inverts this transform storing the result in |transform|. Returns true if this
matrix can be inverted.