[User Education] Disclaimer for internals page.

Changes title and puts a disclaimer at the top that this is not
intended Chrome experience.

Change-Id: I56b11c64dbe7c842d6b3a3bd571b3ab89a2e7104
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6258074
Auto-Submit: Dana Fried <dfried@chromium.org>
Reviewed-by: Rebekah Potter <rbpotter@chromium.org>
Commit-Queue: Dana Fried <dfried@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1419858}
diff --git a/chrome/browser/resources/user_education_internals/index.html b/chrome/browser/resources/user_education_internals/index.html
index 4eaed88..21eb4904 100644
--- a/chrome/browser/resources/user_education_internals/index.html
+++ b/chrome/browser/resources/user_education_internals/index.html
@@ -5,7 +5,7 @@
     <link rel="stylesheet" href="chrome://resources/css/text_defaults_md.css">
     <link rel="stylesheet" href="chrome://theme/colors.css?sets=ui,chrome">
     <link rel="stylesheet" href="chrome://resources/css/md_colors.css">
-    <title>User Education Internals</title>
+    <title>User Education Debug Page</title>
     <style>
       html,
       body {
diff --git a/chrome/browser/resources/user_education_internals/user_education_internals.css b/chrome/browser/resources/user_education_internals/user_education_internals.css
index 95f0e15..1989e75 100644
--- a/chrome/browser/resources/user_education_internals/user_education_internals.css
+++ b/chrome/browser/resources/user_education_internals/user_education_internals.css
@@ -55,6 +55,15 @@
   padding-inline: var(--cr-section-padding);
 }
 
+p {
+  line-height: 1.4;
+  padding-inline: var(--cr-section-padding);
+}
+
+.blurb-warning {
+  color: var(--cr-fallback-color-error);
+}
+
 .whats-new-section {
   padding-inline: var(--cr-section-padding);
 }
diff --git a/chrome/browser/resources/user_education_internals/user_education_internals.html.ts b/chrome/browser/resources/user_education_internals/user_education_internals.html.ts
index a0b564f..eede249 100644
--- a/chrome/browser/resources/user_education_internals/user_education_internals.html.ts
+++ b/chrome/browser/resources/user_education_internals/user_education_internals.html.ts
@@ -52,6 +52,15 @@
       <span id="errorMessage">${this.featurePromoErrorMessage_}</span>
     </cr-toast>
     <div id="content">
+      <div id="warning">
+        <h2>User Education Debug Page</h2>
+        <p>
+          <span class="blurb-warning">NOTICE: DEBUGGING PAGE ONLY!</span>
+          This page is not part of the intended Chrome experience. It is only
+          for testing User Education features and may cause Chrome to behave
+          in ways it was not designed to. Use at your own risk.
+        </p>
+      </div>
       <div id="iph">
         <a name="iph"></a>
         <h2>Feature Promos</h2>