Handler settings page.

chrome/browser/resources/options/content_settings.html

Index: chrome/browser/resources/options/content_settings.html
diff --git a/chrome/browser/resources/options/content_settings.html b/chrome/browser/resources/options/content_settings.html
index 0930ad9a9b8b48e262454482f0f744005ea35cdf..b1502fb1bc7b489305929f012015667a3dea1d16 100644
--- a/chrome/browser/resources/options/content_settings.html
+++ b/chrome/browser/resources/options/content_settings.html
@@ -85,6 +85,29 @@
           i18n-content="manage_exceptions"></button>
     </div>
   </section>
+  <!-- Handlers settings -->
+  <if expr="pp_ifdef('enable_register_protocol_handler')">
+    <section id="handlers-section">
+      <h3 i18n-content="handlers_tab_label"></h3>
+      <div>
+        <div class="radio">
+          <label>
+            <input type="radio" name="handlers" value="allow">
+            <span i18n-content="handlers_allow"></span>
+          </label>
+        </div>
+        <div class="radio">
+          <label>
+            <input type="radio" name="handlers" value="block">
+            <span i18n-content="handlers_block"></span>
+          </label>
+        </div>
+
+        <button id="manage-handlers-button" contentType="handlers"
+            i18n-content="manage_handlers"></button>
+      </div>
+    </section>
+  </if>
   <!-- Plug-ins filter -->
   <section>
     <h3 i18n-content="plugins_tab_label"></h3>