Auto merge of #6065 - mmatyas:canvas_antialias, r=jdm

This patch turns on antialiasing for the canvas, and updates the painting code to use the updated Azure DrawOptions defined in servo/rust-azure#158.

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tests/reftest.rs

@@ -250,9 +250,9 @@ fn capture(reftest: &Reftest, side: usize) -> (u32, u32, Vec<u8>) {
         .stdout(Stdio::null())
         .stderr(Stdio::null())
         .args(&reftest.servo_args[..])
-        // Allows pixel perfect rendering of Ahem font for reftests.
+        // Allows pixel perfect rendering of Ahem font and the HTML canvas for reftests.
         .arg("-Z")
-        .arg("disable-text-aa")
+        .arg("disable-text-aa,disable-canvas-aa")
         .args(&["-f", "-o"])
         .arg(&png_filename)
         .arg(&{

tests/wpt/harness/wptrunner/executors/executorservo.py

@@ -186,7 +186,7 @@ class ServoRefTestExecutor(ProcessTestExecutor):
 
         with TempFilename(self.tempdir) as output_path:
             self.command = [self.binary, "--cpu", "--hard-fail", "--exit",
-                            "-Z", "disable-text-aa", "--output=%s" % output_path,
+                            "-Z", "disable-text-aa,disable-canvas-aa", "--output=%s" % output_path,
                             full_url]
 
             env = os.environ.copy()

tests/wpt/metadata/2dcontext/path-objects/2d.path.arcTo.shape.curve1.html.ini

@@ -0,0 +1,6 @@
+[2d.path.arcTo.shape.curve1.html]
+  type: testharness
+  [arcTo() curves in the right kind of shape]
+    expected:
+      FAIL
+

tests/wpt/metadata/2dcontext/path-objects/2d.path.arcTo.shape.curve2.html.ini

@@ -0,0 +1,6 @@
+[2d.path.arcTo.shape.curve2.html]
+  type: testharness
+  [arcTo() curves in the right kind of shape]
+    expected:
+      FAIL
+