GitLab

> Complete (but inefficient) implementation of the image retargetting method.
> 
> This CL contains:
> 1. Convolution of arbitrary channel with arbitrary kernel (convolver*).
> 2. Gaussian gradient magnitude implementation.
> 3. Image profile (X and Y projections) computations.
> 4. Otsu-like thresholding of profiles.
> 5. Image decimation.
> 6. The main routine which binds it all together.
> 
> Note: 1 and 2 do work, but remain main sources of suckiness due to performance
> problems. I actively work on this. Still, I'd love to get the current state in
> to establish a baseline and for viewing pleasure of those who are interested.
> 
> BUG=155269
> 
> Review URL: https://codereview.chromium.org/13947013

TBR=motek@chromium.org

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@194567 0039d316-1c4b-4281-b951-d872f2087c98