Description: fix build with Python 3.11

Author: Dmitry Shachnev <mitya57@debian.org>

Last-Update: 2023-01-08

--- a/src/3rdparty/chromium/tools/grit/grit/util.py

+++ b/src/3rdparty/chromium/tools/grit/grit/util.py

@@ -211,7 +211,7 @@ def ReadFile(filename, encoding):

     mode = 'rb'

     encoding = None

   else:

-    mode = 'rU'

+    mode = 'r'

   with io.open(abs(filename), mode, encoding=encoding) as f:

     return f.read()

--- a/src/3rdparty/chromium/tools/metrics/structured/model.py

+++ b/src/3rdparty/chromium/tools/metrics/structured/model.py

@@ -26,7 +26,7 @@ _METRIC_TYPE =  models.ObjectNodeType(

     'metric',

     attributes=[

       ('name', unicode, r'^[A-Za-z0-9_.]+$'),

-      ('kind', unicode, r'^(?i)(|hashed-string|int)$'),

+      ('kind', unicode, r'(?i)^(|hashed-string|int)$'),

     ],

     alphabetization=[

         (_OBSOLETE_TYPE.tag, lambda _: 1),

--- a/src/3rdparty/chromium/tools/metrics/ukm/ukm_model.py

+++ b/src/3rdparty/chromium/tools/metrics/ukm/ukm_model.py

@@ -42,7 +42,7 @@ _INDEX_TYPE = models.ObjectNodeType(

 _STATISTICS_TYPE =  models.ObjectNodeType(

     'statistics',

     attributes=[

-      ('export', str, r'^(?i)(|true|false)$'),

+      ('export', str, r'(?i)^(|true|false)$'),

     ],

     children=[

         models.ChildType(_QUANTILES_TYPE.tag, _QUANTILES_TYPE, multiple=False),

@@ -94,7 +94,7 @@ _EVENT_TYPE =  models.ObjectNodeType(

     'event',

     attributes=[

       ('name', str, r'^[A-Za-z0-9.]+$'),

-      ('singular', str, r'^(?i)(|true|false)$'),

+      ('singular', str, r'(?i)^(|true|false)$'),

     ],

     alphabetization=[

         (_OBSOLETE_TYPE.tag, _KEEP_ORDER),