Re-land: Change actions.txt to actions.xml

tools/metrics/actions/print_style.py

Index: tools/metrics/actions/print_style.py
diff --git a/tools/metrics/actions/print_style.py b/tools/metrics/actions/print_style.py
new file mode 100644
index 0000000000000000000000000000000000000000..5625669147eadd626cfc14358f5f4e0e763f99d0
--- /dev/null
+++ b/tools/metrics/actions/print_style.py
@@ -0,0 +1,41 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""Holds the constants for pretty printing actions.xml."""
+
+import os
+import sys
+
+# Import the metrics/common module for pretty print xml.
+sys.path.append(os.path.join(os.path.dirname(__file__), '..', 'common'))
+import pretty_print_xml
+
+# Desired order for tag and tag attributes.
+# { tag_name: [attribute_name, ...] }
+ATTRIBUTE_ORDER = {
+    'action': ['name'],
+    'owner': [],
+    'description': [],
+    'obsolete': [],
+}
+
+# Tag names for top-level nodes whose children we don't want to indent.
+TAGS_THAT_DONT_INDENT = ['actions']
+
+# Extra vertical spacing rules for special tag names.
+# {tag_name: (newlines_after_open, newlines_before_close, newlines_after_close)}
+TAGS_THAT_HAVE_EXTRA_NEWLINE = {
+    'actions': (2, 1, 1),
+    'action': (1, 1, 1),
+}
+
+# Tags that we allow to be squished into a single line for brevity.
+TAGS_THAT_ALLOW_SINGLE_LINE = ['owner', 'description', 'obsolete']
+
+def GetPrintStyle():
+  """Returns an XmlStyle object for pretty printing actions."""
+  return pretty_print_xml.XmlStyle(ATTRIBUTE_ORDER,
+                                   TAGS_THAT_HAVE_EXTRA_NEWLINE,
+                                   TAGS_THAT_DONT_INDENT,
+                                   TAGS_THAT_ALLOW_SINGLE_LINE)