Revert 241475 "[telemetry] Implement per-pixel algorithms in Bit..."

bitmaptools.so artifact interferes with svn in gclient sync on GPU bots

> [telemetry] Implement per-pixel algorithms in Bitmap as a C++ extension.
> 
> The extension provides fast bitmap operations with no external
> dependencies. However, it is not available on all platforms.
> 
> BUG=323813
> TEST=telemetry bitmap_unittest
> R=bulach@chromium.org, tonyg@chromium.org
> 
> Review URL: https://codereview.chromium.org/114793004

TBR=szym@chromium.org

Review URL: https://codereview.chromium.org/118013002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241510 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241510
Enable software compositing on Mac

Disable accelerated compositing test to match Aura behavior.

Change task manager tests to disable the GPU instead of turning
off accelerated compositing (as this doesn't have meaning in the
software composited world).

BUG=286038

Review URL: https://codereview.chromium.org/102333003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241511 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 241511