Add use-counter for http refresh when scripting is disabled.

This CL tracks usage of http refresh when scripting is disabled. It is
meant to gauge how many websites would break if we were to block http
refresh when user disabled Javascript. The goal would be to help
accessibility tools being confused by continual reloads.

Test: Go to https://meta-http-equiv-refresh.glitch.me/ and check
chrome://histograms/UseCounter.Features

HTML Spec PR: whatwg/html#7203

Change-Id: I2961a5ca05f4d2348e712673bb7686ea63b349b5
Bug: 63107
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3231179
Reviewed-by: Mike West <mkwst@chromium.org>
Commit-Queue: François Beaufort <beaufort.francois@gmail.com>
Cr-Commit-Position: refs/heads/main@{#933377}
NOKEYCHECK=True
GitOrigin-RevId: 32c6f34e902866e29b0a242ca8a095c5663d6fbd

blink/public/mojom/web_feature/web_feature.mojom

@@ -3369,6 +3369,7 @@ enum WebFeature {
   kWebAssemblyDynamicTiering = 4059,
   kReadOrWriteWebDatabase = 4061,
   kAutoDarkMode = 4062,
+  kHttpRefreshWhenScriptingDisabled = 4063,
 
   // Add new features immediately above this line. Don't change assigned
   // numbers of any item, and don't reuse removed slots.

blink/renderer/core/dom/document.cc

@@ -4260,6 +4260,12 @@ void Document::MaybeHandleHttpRefresh(const String& content,
         mojom::ConsoleMessageLevel::kError, message));
     return;
   }
+
+  // Monitor blocking refresh usage when scripting is disabled.
+  // See https://crbug.com/63107
+  if (!dom_window_->CanExecuteScripts(kNotAboutToExecuteScript))
+    UseCounter::Count(this, WebFeature::kHttpRefreshWhenScriptingDisabled);
+
   if (http_refresh_type == kHttpRefreshFromHeader) {
     UseCounter::Count(this, WebFeature::kRefreshHeader);
   }