Add 'priority' key to CSSProperties.in

third_party/WebKit/Source/build/scripts/css_properties.py

Index: third_party/WebKit/Source/build/scripts/css_properties.py
diff --git a/third_party/WebKit/Source/build/scripts/css_properties.py b/third_party/WebKit/Source/build/scripts/css_properties.py
index e2015500bbda2b7e01bd2eb0e91e28829791579a..66069fc5652a3716afafa4abf46089f6dd24d327 100755
--- a/third_party/WebKit/Source/build/scripts/css_properties.py
+++ b/third_party/WebKit/Source/build/scripts/css_properties.py
@@ -31,6 +31,7 @@ class CSSProperties(in_generator.Writer):
         'custom_value': False,
         'builder_skip': False,
         'direction_aware': False,
+        'priority': 2,
         'api_class': None,
         # Generated ComputedStyle annotations.
         'field_storage_type': None,
@@ -62,6 +63,10 @@ class CSSProperties(in_generator.Writer):
         in_generator.Writer.__init__(self, file_paths)
 
         properties = self.in_file.name_dictionaries
+
+        # Sort properties by priority, then alphabetically.
+        properties.sort(key=lambda p: (int(p['priority']), name_utilities.strip_webkit_prefix(p['name'])))

[alancutter (OOO until 2018), 2017/01/11 03:24:20]

This sorting key has collisions between different items resulting in potentially
non-deterministic behaviour.
I wouldn't bother stripping "-webkit-", alternatively just strip the "-" and
assert that no sorting key collisions occur.

[sashab, 2017/01/11 03:57:44]

Done. Added check for sorting key collisions.

+
         self._aliases = [property for property in properties if property['alias_for']]
         properties = [property for property in properties if not property['alias_for']]