Remove throughput_tests

chrome/test/data/perf/rendering/throughput/canvas2d_balls_common/bouncing_balls_draw_back_as_canvas.js

Index: chrome/test/data/perf/rendering/throughput/canvas2d_balls_common/bouncing_balls_draw_back_as_canvas.js
diff --git a/chrome/test/data/perf/rendering/throughput/canvas2d_balls_common/bouncing_balls_draw_back_as_canvas.js b/chrome/test/data/perf/rendering/throughput/canvas2d_balls_common/bouncing_balls_draw_back_as_canvas.js
deleted file mode 100644
index 0b5b93c8773e1eaccee0a8b88ef4054a92d7243c..0000000000000000000000000000000000000000
--- a/chrome/test/data/perf/rendering/throughput/canvas2d_balls_common/bouncing_balls_draw_back_as_canvas.js
+++ /dev/null
@@ -1,18 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-var backImageCanvas;
-
-function prepareBackground() {
-  var backImage = document.getElementById('backImage');
-  backImageCanvas = document.createElement('canvas');
-  backImageCanvas.width = backImage.naturalWidth;
-  backImageCanvas.height = backImage.naturalHeight;
-  var backContext = backImageCanvas.getContext('2d');
-  backContext.drawImage(backImage, 0, 0);
-}
-
-function drawBackground() {
-  canvasContext.drawImage(backImageCanvas, 0, 0, canvasWidth, canvasHeight);
-}