diff --git a/lib/web_ui/dev/goldens_lock.yaml b/lib/web_ui/dev/goldens_lock.yaml
index 593346a142d..52ccbb99224 100644
--- a/lib/web_ui/dev/goldens_lock.yaml
+++ b/lib/web_ui/dev/goldens_lock.yaml
@@ -1,2 +1,2 @@
 repository: https://github.com/flutter/goldens.git
-revision: 993752770817654e362b85f4781d300a9b215d4c
+revision: b052f28ce37ae66f44ac9824835e96a3509cef8e
diff --git a/lib/web_ui/lib/src/ui/canvas.dart b/lib/web_ui/lib/src/ui/canvas.dart
index 66edcdbe1c3..b6d863874d1 100644
--- a/lib/web_ui/lib/src/ui/canvas.dart
+++ b/lib/web_ui/lib/src/ui/canvas.dart
@@ -747,9 +747,10 @@ class Canvas {
     assert(engine.rectIsValid(dst));
     assert(paint != null);
 
-    // Assert you can fit the scaled image into dst.
-    assert(image.width - center.width >= dst.width);
-    assert(image.height - center.height >= dst.height);
+    // Assert you can fit the scaled part of the image (exluding the
+    // center source).
+    assert(image.width - center.width < dst.width);
+    assert(image.height - center.height < dst.height);
 
     // The four unscaled corner rectangles in the from the src.
     final Rect srcTopLeft = Rect.fromLTWH(
diff --git a/lib/web_ui/test/golden_tests/engine/canvas_draw_image_golden_test.dart b/lib/web_ui/test/golden_tests/engine/canvas_draw_image_golden_test.dart
index 6a61f401b25..81f1163a443 100644
--- a/lib/web_ui/test/golden_tests/engine/canvas_draw_image_golden_test.dart
+++ b/lib/web_ui/test/golden_tests/engine/canvas_draw_image_golden_test.dart
@@ -346,8 +346,176 @@ void main() async {
     await _checkScreenshot(rc, 'draw_text_composite_order_below',
         maxDiffRatePercent: 1.0);
   });
+
+  // Creates a picture
+  test('Paints nine slice image', () async {
+    Rect region = const Rect.fromLTWH(0, 0, 500, 500);
+    EnginePictureRecorder recorder = EnginePictureRecorder();
+    final Canvas canvas = Canvas(recorder, region);
+    Image testImage = createNineSliceImage();
+    canvas.clipRect(Rect.fromLTWH(0, 0,420, 200));
+    canvas.drawImageNine(testImage, Rect.fromLTWH(20, 20, 20, 20),
+        Rect.fromLTWH(20, 20, 400, 400), Paint());
+    Picture picture = recorder.endRecording();
+
+    final SurfaceSceneBuilder builder = SurfaceSceneBuilder();
+    builder.addPicture(Offset(0, 0), picture);
+
+    // Wrap in <flt-scene> so that our CSS selectors kick in.
+    final html.Element sceneElement = html.Element.tag('flt-scene');
+    try {
+      sceneElement.append(builder.build().webOnlyRootElement);
+      html.document.body.append(sceneElement);
+      await matchGoldenFile('draw_nine_slice.png',
+          region: region, maxDiffRatePercent: 0);
+    } finally {
+      // The page is reused across tests, so remove the element after taking the
+      // Scuba screenshot.
+      sceneElement.remove();
+    }
+  });
 }
 
+// 9 slice test image that has a shiny/glass look.
+const String base64ImageData = 'data:image/png;base64,iVBORw0KGgoAAAANSUh'
+    'EUgAAADwAAAA8CAYAAAA6/NlyAAAABGdBTUEAALGPC/xhBQAAACBjSFJNAAB6JgAAgIQAAPo'
+    'AAACA6AAAdTAAAOpgAAA6mAAAF3CculE8AAAApGVYSWZNTQAqAAAACAAFARIAAwAAAAEAAQA'
+    'AARoABQAAAAEAAABKARsABQAAAAEAAABSATEAAgAAACAAAABah2kABAAAAAEAAAB6AAAAAAAA'
+    'AEgAAAABAAAASAAAAAFBZG9iZSBQaG90b3Nob3AgQ1M2IChNYWNpbnRvc2gpAAADoAEAAwAA'
+    'AAEAAQAAoAIABAAAAAEAAAA8oAMABAAAAAEAAAA8AAAAAKgRPeEAAAAJcEhZcwAACxMAAAs'
+    'TAQCanBgAAATqaVRYdFhNTDpjb20uYWRvYmUueG1wAAAAAAA8eDp4bXBtZXRhIHhtbG5zOn'
+    'g9ImFkb2JlOm5zOm1ldGEvIiB4OnhtcHRrPSJYTVAgQ29yZSA1LjQuMCI+CiAgIDxyZGY6Uk'
+    'RGIHhtbG5zOnJkZj0iaHR0cDovL3d3dy53My5vcmcvMTk5OS8wMi8yMi1yZGYtc3ludGF4LW'
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+    'IHhtbG5zOnhtcE1NPSJodHRwOi8vbnMuYWRvYmUuY29tL3hhcC8xLjAvbW0vIgogICAgICA'
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+    'fDKCVVXgvDwLptJiOcT7N5XTXglLdqmtQ1l+h6EqTYmFjJR0KZc5QlBWhY5F5BjP70bgqnD'
+    'nPHSVH9zHPrbNEH6LET0HZn37+xUu5xG8DSqp0V7D0ItwVacEikdSjjjJgoqwuGvXNXGOg'
+    'Z2x0yEXi0PeqFO87AiFGCkemvOKYkSF/6yS1vnLOWTaHN/VcmnSWt0eHThELBHBiCGisGra'
+    'SI5l6R3qD0q05ZR4TNVHES7bnltEgcg6JF3uVlyFsBpdB+lzgdRTMHeejneZR0H1BrnKECH'
+    '7GyVy1BAmcsr17WxYs78QNqQF4bppFXqX9BBqIrzmcExwueASjAFzlaWncpqEpJCXVc7wv'
+    'Nj7eT/BbztCaofk+k0AAAAAElFTkSuQmCC';
+
+HtmlImage createNineSliceImage() {
+  return HtmlImage(
+    html.ImageElement()
+      ..src = base64ImageData,
+    60,
+    60,
+  );
+}
+
+
 HtmlImage createTestImage({int width = 100, int height = 50}) {
   html.CanvasElement canvas =
       new html.CanvasElement(width: width, height: height);