Revert 71982 - [Committed on behalf of reed@google.com]...

Revert 71982 - [Committed on behalf of reed@google.com]

Add gpu/ files from the public skia project into the chrome build. This is in
preparation for experimenting with them to gpu-accelerate various aspects of
chrome's drawing. In this initial patch, the files will be built, but not
called.

BUG=none
TEST=be sure that page rendering, and <canvas> rendering, look the same as before

Review URL:  http://codereview.chromium.org/6357006


TBR=senorblanco@chromium.org

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=71986