Import Cobalt 19.master.0.203780

Includes the following patches:
  https://cobalt-review.googlesource.com/c/cobalt/+/5210
    by errong.leng@samsung.com
  https://cobalt-review.googlesource.com/c/cobalt/+/5270
    by linus.wang@samsung.com
diff --git a/src/third_party/web_platform_tests/2dcontext/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html b/src/third_party/web_platform_tests/2dcontext/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
new file mode 100644
index 0000000..4fd2a0e
--- /dev/null
+++ b/src/third_party/web_platform_tests/2dcontext/path-objects/2d.path.bezierCurveTo.ensuresubpath.2.html
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
+<title>Canvas test: 2d.path.bezierCurveTo.ensuresubpath.2</title>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="/common/canvas-tests.js"></script>
+<link rel="stylesheet" href="/common/canvas-tests.css">
+<body class="show_output">
+
+<h1>2d.path.bezierCurveTo.ensuresubpath.2</h1>
+<p class="desc">If there is no subpath, the first control point is added</p>
+
+
+<p class="output">Actual output:</p>
+<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas>
+<p class="output expectedtext">Expected output:<p><img src="/images/green-100x50.png" class="output expected" id="expected" alt="">
+<ul id="d"></ul>
+<script>
+var t = async_test("If there is no subpath, the first control point is added");
+_addTest(function(canvas, ctx) {
+
+ctx.fillStyle = '#f00';
+ctx.fillRect(0, 0, 100, 50);
+ctx.strokeStyle = '#0f0';
+ctx.lineWidth = 50;
+ctx.beginPath();
+ctx.bezierCurveTo(0, 25, 100, 25, 100, 25);
+ctx.stroke();
+_assertPixel(canvas, 50,25, 0,255,0,255, "50,25", "0,255,0,255");
+_assertPixel(canvas, 5,45, 0,255,0,255, "5,45", "0,255,0,255");
+
+
+});
+</script>
+