Handle failure to parse the value of the width and height attributes on canvas elements (fixes #3200).

The remaining failures are due to the tests's use of getComputedStyle.

src/components/script/dom/htmlcanvaselement.rs

@@ -133,11 +133,11 @@ impl<'a> VirtualMethods for JSRef<'a, HTMLCanvasElement> {
 
         let recreate = match name.as_slice() {
             "width" => {
-                self.width.set(parse_unsigned_integer(value.as_slice().chars()).unwrap());
+                self.width.set(parse_unsigned_integer(value.as_slice().chars()).unwrap_or(DefaultWidth));
                 true
             }
             "height" => {
-                self.height.set(parse_unsigned_integer(value.as_slice().chars()).unwrap());
+                self.height.set(parse_unsigned_integer(value.as_slice().chars()).unwrap_or(DefaultHeight));
                 true
             }
             _ => false,

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.em.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.em.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.empty.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.parse.empty.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.exp.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.exp.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.hex.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.hex.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.junk.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.parse.junk.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.minus.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.parse.minus.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.onlyspace.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.parse.onlyspace.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.percent.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.percent.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.space.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.space.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.trailingjunk.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.trailingjunk.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.parse.whitespace.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.parse.whitespace.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.em.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.em.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.empty.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.setAttribute.empty.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.exp.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.exp.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.hex.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.hex.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.junk.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.setAttribute.junk.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.minus.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.setAttribute.minus.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.onlyspace.html.ini

@@ -1,3 +0,0 @@
-[size.attributes.setAttribute.onlyspace.html]
-  type: testharness
-  expected: TIMEOUT

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.percent.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.percent.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.space.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.space.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.trailingjunk.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.trailingjunk.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+

src/test/wpt/metadata/html/semantics/embedded-content/the-canvas-element/size.attributes.setAttribute.whitespace.html.ini

@@ -1,3 +1,5 @@
 [size.attributes.setAttribute.whitespace.html]
   type: testharness
-  expected: TIMEOUT
+  [Parsing of non-negative integers in setAttribute]
+    expected: FAIL
+