Migrate DeprecatedEqual to EqualASCII for DOM events and database authorizer

This migrates remaining DeprecatedEqual comparisons against ASCII
constants [1]. Although it is potentially web-facing, no tests are
written as suggested on blink-dev [2].

[1] https://docs.google.com/document/d/1uZ0wMBF63eLJNbW3yz1oGK7qkO3VqRUwdmNAbiLanN8
[2] https://groups.google.com/a/chromium.org/d/msg/blink-dev/sFOpNuQ91UU/3u1HxbnQCQAJ

Bug: 627682
Change-Id: I5479c236c44c61a4f722a1746fdc859983c3135b
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2128315Reviewed-by: Victor Costan <pwnall@chromium.org>
Reviewed-by: Mason Freed <masonfreed@chromium.org>
Commit-Queue: Frédéric Wang <fwang@igalia.com>
Cr-Commit-Position: refs/heads/master@{#757108}

third_party/blink/renderer/build/scripts/templates/event_factory.cc.tmpl

@@ -17,7 +17,7 @@ namespace blink {
 
 Event* Event{{suffix}}Factory::Create(ExecutionContext* executionContext, const String& type) {
   {% for event in events %}
-  if (DeprecatedEqualIgnoringCase(type, "{{event|name}}"){% if event.RuntimeEnabled %} && RuntimeEnabledFeatures::{{event.RuntimeEnabled}}(){% endif %}) {
+  if (EqualIgnoringASCIICase(type, "{{event|name}}"){% if event.RuntimeEnabled %} && RuntimeEnabledFeatures::{{event.RuntimeEnabled}}(){% endif %}) {
     {% if not event|name|create_event_ignore_case_list %}
     UseCounter::Count(executionContext, WebFeature::k{{event|name|measure_name}});
     {% endif %}

third_party/blink/renderer/modules/webdatabase/database_authorizer.cc

@@ -242,7 +242,7 @@ int DatabaseAuthorizer::CreateVTable(const String& table_name,
     return kSQLAuthDeny;
 
   // Allow only the FTS3 extension
-  if (!DeprecatedEqualIgnoringCase(module_name, "fts3"))
+  if (!EqualIgnoringASCIICase(module_name, "fts3"))
     return kSQLAuthDeny;
 
   last_action_changed_database_ = true;