Update benchmark test suite

Update benchmark test suite
https://bugs.webkit.org/show_bug.cgi?id=152679

Reviewed by Simon Fraser.

Move algorithm.js and sampler.js to tests/ and benchmark-runner.js to runner/.

Needed by both harnesses.
* Animometer/resources/runner/benchmark-runner.js: Renamed from PerformanceTests/Animometer/resources/debug-runner/benchmark-runner.js.
* Animometer/developer.html:
* Animometer/index.html:

Needed only by the tests. Move to tests/. Statistics, in sampler.js, is used by ResultsDashboard, so move that
into extensions.js.
* Animometer/resources/extensions.js:
* Animometer/tests/resources/algorithm.js: Renamed from PerformanceTests/Animometer/resources/algorithm.js.
* Animometer/tests/resources/sampler.js: Renamed from PerformanceTests/Animometer/resources/sampler.js.
* Animometer/tests/bouncing-particles/bouncing-canvas-images.html:
* Animometer/tests/bouncing-particles/bouncing-canvas-shapes.html:
* Animometer/tests/bouncing-particles/bouncing-css-images.html:
* Animometer/tests/bouncing-particles/bouncing-css-shapes.html:
* Animometer/tests/bouncing-particles/bouncing-svg-images.html:
* Animometer/tests/bouncing-particles/bouncing-svg-shapes.html:
* Animometer/tests/master/canvas-stage.html:
* Animometer/tests/misc/canvas-electrons.html:
* Animometer/tests/misc/canvas-stars.html:
* Animometer/tests/misc/compositing-transforms.html:
* Animometer/tests/simple/simple-canvas-paths.html:
* Animometer/tests/template/template-canvas.html:
* Animometer/tests/template/template-css.html:
* Animometer/tests/template/template-svg.html:
* Animometer/tests/text/layering-text.html:
* Animometer/tests/text/text-boxes.html:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@194753 268f45cc-cd09-0410-ab3c-d52691b4dbfc