Only enable Hotwords when extensions are enabled.

chrome/browser/resources/component_extension_resources.grd

Index: chrome/browser/resources/component_extension_resources.grd
diff --git a/chrome/browser/resources/component_extension_resources.grd b/chrome/browser/resources/component_extension_resources.grd
index 783b194a71e7a5edb395ee63a58a08c024fca0be..d5ad303b0ee5f56576ad5667835ed6b5f3216e57 100644
--- a/chrome/browser/resources/component_extension_resources.grd
+++ b/chrome/browser/resources/component_extension_resources.grd
@@ -59,8 +59,10 @@
         <include name="IDR_HANGOUT_SERVICES_THUNK_JS" file="hangout_services/thunk.js" type="BINDATA" />
       </if>
       <!-- Hotword Helper extension -->
-      <include name="IDR_HOTWORD_HELPER_AUDIO_CLIENT_JS" file="hotword_helper/audio_client.js" type="BINDATA" />
-      <include name="IDR_HOTWORD_HELPER_MANAGER_JS" file="hotword_helper/manager.js" type="BINDATA" />
+      <if expr="enable_extensions">
+        <include name="IDR_HOTWORD_HELPER_AUDIO_CLIENT_JS" file="hotword_helper/audio_client.js" type="BINDATA" />
+        <include name="IDR_HOTWORD_HELPER_MANAGER_JS" file="hotword_helper/manager.js" type="BINDATA" />
+      </if>
       <include name="IDR_FEEDBACK_DEFAULT_HTML" file="feedback/html/default.html" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
       <include name="IDR_FEEDBACK_EVENT_HANDLER_JS" file="feedback/js/event_handler.js" flattenhtml="true" type="BINDATA" />
       <include name="IDR_FEEDBACK_FEEDBACK_JS" file="feedback/js/feedback.js" flattenhtml="true" type="BINDATA" />