Add chrome://vr-shell-ui internal page

chrome/browser/browser_resources.grd

Index: chrome/browser/browser_resources.grd
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 7fef3c87b0d2e29587c2ce614ce2eda9bc2ee771..788457d24dd34409362a0528931d350df0b088ff 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -197,6 +197,12 @@
         <include name="IDR_SNIPPETS_INTERNALS_HTML" file="resources\snippets_internals.html" allowexternalscript="true" compress="gzip" type="BINDATA" />
         <include name="IDR_SNIPPETS_INTERNALS_CSS" file="resources\snippets_internals.css" compress="gzip" type="BINDATA" />
         <include name="IDR_SNIPPETS_INTERNALS_JS" file="resources\snippets_internals.js" compress="gzip" type="BINDATA" />
+        <!-- TODO: Enable only for VrShell, independent of Android. -->
+        <if expr="enable_vr_shell">
+          <include name="IDR_VR_SHELL_UI_HTML" file="resources\vr_shell\vr_shell_ui.html" allowexternalscript="true" flattenhtml="true" compress="gzip" type="BINDATA" />
+          <include name="IDR_VR_SHELL_UI_CSS" file="resources\vr_shell\vr_shell_ui.css" compress="gzip" type="BINDATA" />
+          <include name="IDR_VR_SHELL_UI_JS" file="resources\vr_shell\vr_shell_ui.js" compress="gzip" type="BINDATA" />
+        </if>
       </if>
       <include name="IDR_SUPERVISED_USER_INTERNALS_HTML" file="resources\supervised_user_internals.html" allowexternalscript="true" compress="gzip" type="BINDATA" />
       <include name="IDR_SUPERVISED_USER_INTERNALS_CSS" file="resources\supervised_user_internals.css" compress="gzip" type="BINDATA" />