Update web-platform-tests and CSS tests.

- Update CSS tests to revision e05bfd5e30ed662c2f8a353577003f8eed230180.
- Update web-platform-tests to revision a052787dd5c069a340031011196b73affbd68cd9.

tests/wpt/css-tests/tools/py/doc/example/genhtmlcss.py

@@ -0,0 +1,23 @@
+import py
+html = py.xml.html
+
+class my(html):
+    "a custom style"
+    class body(html.body):
+        style = html.Style(font_size = "120%")
+
+    class h2(html.h2):
+        style = html.Style(background = "grey")
+
+    class p(html.p):
+        style = html.Style(font_weight="bold")
+
+doc = my.html(
+    my.head(),
+    my.body(
+        my.h2("hello world"),
+        my.p("bold as bold can")
+    )
+)
+
+print doc.unicode(indent=2)