Initial checkin of the compositor_model_bench tool

Initial checkin of the compositor_model_bench tool

This tool simulates the GPU demands of Chromium's GPU-accelerated compositor. In
the current version, we simulate the performance of the existing forward
rendering model; coming changes will prototype a new model.

BUG=None
TEST=self

This is http://codereview.chromium.org/7718020/ with trivial fixes
Original change by Joshua Trask <joshtrask@google.com>;

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98706

Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=98900

[commit-bot: I haz the power, 2011-08-29 21:37:56]

No reviewers yet.

[piman, 2011-08-30 00:15:36]

I had some build issues when submitting the patch originally, this contains the
fixes.

[joshtrask, 2011-08-31 00:00:56]

On 2011/08/30 00:15:36, piman wrote:
> I had some build issues when submitting the patch originally, this contains
the
> fixes.

LGTM

[commit-bot: I haz the power, 2011-08-31 00:05:41]

No LGTM from valid reviewers yet.