Bug 1950211 - Add telemetry for String methods calling RegExp symbols on primitives r=dminor,iain

This patch adds telemetry for tc39/ecma262#3009.

That normative PR has already been approved by TC39, but we need to
verify that it's web compatible.

Differential Revision: https://phabricator.services.mozilla.com/D241305

UltraBlame original commit: 6ea635bde2b623ac6352c27b65d5afb58d17fde4

Author: marco-c

dom/base/UseCounters.conf

@@ -756,6 +756,30 @@ used
 implementation
 defined
 behaviour
+custom
+JS_regexp_symbol_protocol_on_primitive
+passed
+a
+primitive
+with
+a
+custom
+implementation
+of
+the
+regexp
+protocol
+symbols
+to
+one
+of
+the
+String
+methods
+that
+accept
+a
+regexp
 /
 /
 Console

dom/base/use_counter_metrics.yaml

@@ -812,7 +812,7 @@ counters
 #
 Total
 of
-2395
+2397
 use
 counter
 metrics
@@ -824,7 +824,7 @@ denominators
 #
 Total
 of
-357
+358
 '
 page
 '
@@ -4675,6 +4675,115 @@ send_in_pings
 use
 -
 counters
+js_regexp_symbol_protocol_on_primitive
+:
+type
+:
+counter
+description
+:
+>
+Whether
+a
+page
+passed
+a
+primitive
+with
+a
+custom
+implementation
+of
+the
+regexp
+protocol
+symbols
+to
+one
+of
+the
+String
+methods
+that
+accept
+a
+regexp
+.
+Compare
+against
+use
+.
+counter
+.
+top_level_content_documents_destroyed
+to
+calculate
+the
+rate
+.
+bugs
+:
+-
+https
+:
+/
+/
+bugzilla
+.
+mozilla
+.
+org
+/
+show_bug
+.
+cgi
+?
+id
+=
+1852098
+data_reviews
+:
+-
+https
+:
+/
+/
+bugzilla
+.
+mozilla
+.
+org
+/
+show_bug
+.
+cgi
+?
+id
+=
+1852098
+notification_emails
+:
+-
+dom
+-
+core
+mozilla
+.
+com
+-
+emilio
+mozilla
+.
+com
+expires
+:
+never
+send_in_pings
+:
+-
+use
+-
+counters
 console_assert
 :
 type
@@ -33944,7 +34053,7 @@ counters
 #
 Total
 of
-357
+358
 '
 document
 '
@@ -37795,6 +37904,115 @@ send_in_pings
 use
 -
 counters
+js_regexp_symbol_protocol_on_primitive
+:
+type
+:
+counter
+description
+:
+>
+Whether
+a
+document
+passed
+a
+primitive
+with
+a
+custom
+implementation
+of
+the
+regexp
+protocol
+symbols
+to
+one
+of
+the
+String
+methods
+that
+accept
+a
+regexp
+.
+Compare
+against
+use
+.
+counter
+.
+content_documents_destroyed
+to
+calculate
+the
+rate
+.
+bugs
+:
+-
+https
+:
+/
+/
+bugzilla
+.
+mozilla
+.
+org
+/
+show_bug
+.
+cgi
+?
+id
+=
+1852098
+data_reviews
+:
+-
+https
+:
+/
+/
+bugzilla
+.
+mozilla
+.
+org
+/
+show_bug
+.
+cgi
+?
+id
+=
+1852098
+notification_emails
+:
+-
+dom
+-
+core
+mozilla
+.
+com
+-
+emilio
+mozilla
+.
+com
+expires
+:
+never
+send_in_pings
+:
+-
+use
+-
+counters
 console_assert
 :
 type

js/public/friend/UsageStatistics.h

@@ -754,6 +754,12 @@ _
 OPTIMIZE_PROMISE_LOOKUP_FUSE
 OptimizePromiseLookupFuse
 )
+\
+_
+(
+REGEXP_SYMBOL_PROTOCOL_ON_PRIMITIVE
+RegExpSymbolProtocolOnPrimitive
+)
 /
 *
 *