Add a couple simple canvas benchmarks

/*

 * Copyright (C) 2016 The Android Open Source Project

 *

 * Licensed under the Apache License, Version 2.0 (the "License");

 * you may not use this file except in compliance with the License.

 * You may obtain a copy of the License at

 *

 *      http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package android.graphics.perftests;

import android.graphics.Bitmap;

import android.graphics.Color;

import android.graphics.Bitmap.Config;

import android.graphics.Paint;

import android.perftests.utils.BenchmarkState;

import android.perftests.utils.PerfStatusReporter;

import android.support.test.filters.LargeTest;

import android.view.DisplayListCanvas;

import android.view.RenderNode;

import org.junit.Rule;

import org.junit.Test;

@LargeTest

public class CanvasPerfTest {

    @Rule

    public PerfStatusReporter mPerfStatusReporter = new PerfStatusReporter();

    @Test

    public void testBasicViewGroupDraw() {

        // This test is a clone of BM_DisplayListCanvas_basicViewGroupDraw

        BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        RenderNode node = RenderNode.create("benchmark", null);

        RenderNode child = RenderNode.create("child", null);

        child.setLeftTopRightBottom(50, 50, 100, 100);

        DisplayListCanvas canvas = node.start(100, 100);

        node.end(canvas);

        canvas = child.start(50, 50);

        canvas.drawColor(Color.WHITE);

        child.end(canvas);

        while (state.keepRunning()) {

            canvas = node.start(200, 200);

            canvas.setHighContrastText(false);

            int save = canvas.save();

            canvas.clipRect(1, 1, 199, 199);

            canvas.insertReorderBarrier();

            for (int i = 0; i < 5; i++) {

                canvas.drawRenderNode(child);

            }

            canvas.insertInorderBarrier();

            canvas.restoreToCount(save);

            node.end(canvas);

        }

    }

    @Test

    public void testRecordSimpleBitmapView() {

        // This test is a clone of BM_DisplayListCanvas_record_simpleBitmapView

        BenchmarkState state = mPerfStatusReporter.getBenchmarkState();

        RenderNode node = RenderNode.create("benchmark", null);

        DisplayListCanvas canvas = node.start(100, 100);

        node.end(canvas);

        Bitmap bitmap = Bitmap.createBitmap(80, 80, Config.ARGB_8888);

        Paint paint = new Paint();

        paint.setColor(Color.BLACK);

        while (state.keepRunning()) {

            canvas = node.start(100, 100);

            {

                canvas.save();

                canvas.drawRect(0, 0, 100, 100, paint);

                canvas.restore();

            }

            {

                canvas.save();

                canvas.translate(10, 10);

                canvas.drawBitmap(bitmap, 0, 0, null);

                canvas.restore();

            }

            node.end(canvas);

        }

    }

}