[web] Fix path to svg for drrect (flutter#13779)

Author: ferhatb

lib/web_ui/dev/goldens_lock.yaml

@@ -1,2 +1,2 @@
 repository: https://github.com/flutter/goldens.git
-revision: 009fbdd595aeec364eaff6b8f337f8ceb3c44ab9
+revision: 75729099b6f4d4e78ceb110b9305fc9905b91519

lib/web_ui/lib/src/engine/path_to_svg.dart

@@ -96,9 +96,9 @@ void pathToSvg(ui.Path path, StringBuffer sb,
           final double blRadiusY = rrect.blRadiusY.abs();
           final double brRadiusY = rrect.brRadiusY.abs();
 
-          sb.write('L ${left + trRadiusX} $top ');
+          sb.write('M ${left + trRadiusX} $top ');
           // Top side and top-right corner
-          sb.write('M ${right - trRadiusX} $top ');
+          sb.write('L ${right - trRadiusX} $top ');
           _writeEllipse(sb, right - trRadiusX, top + trRadiusY, trRadiusX,
               trRadiusY, 0, 1.5 * math.pi, 2.0 * math.pi, false);
           // Right side and bottom-right corner

lib/web_ui/test/golden_tests/engine/canvas_draw_image_golden_test.dart

@@ -31,7 +31,7 @@ void main() async {
     try {
       sceneElement.append(engineCanvas.rootElement);
       html.document.body.append(sceneElement);
-      await matchGoldenFile('$fileName.png', region: region, maxDiffRate: 0.02);
+      await matchGoldenFile('$fileName.png', region: region, maxDiffRate: 0.2);
     } finally {
       // The page is reused across tests, so remove the element after taking the
       // Scuba screenshot.
@@ -100,6 +100,19 @@ void main() async {
     await _checkScreenshot(rc, 'draw_image_rect_with_source');
   });
 
+  test('Paints image with source and destination and round clip', () async {
+    final RecordingCanvas rc =
+    RecordingCanvas(const Rect.fromLTRB(0, 0, 400, 300));
+    Image testImage = createTestImage();
+    double testWidth = testImage.width.toDouble();
+    double testHeight = testImage.height.toDouble();
+    rc.save();
+    rc.clipRRect(RRect.fromLTRBR(100, 30, 2 * testWidth, 2 * testHeight, Radius.circular(16)));
+    rc.drawImageRect(testImage, Rect.fromLTRB(testWidth / 2, 0, testWidth, testHeight),
+        Rect.fromLTRB(100, 30, 2 * testWidth, 2 * testHeight), new Paint());
+    await _checkScreenshot(rc, 'draw_image_rect_with_source_and_clip');
+  });
+
   test('Paints image with transform using source and destination', () async {
     final RecordingCanvas rc =
     RecordingCanvas(const Rect.fromLTRB(0, 0, 400, 300));