Color the VR omnibox security icons.

chrome/browser/resources/vr_shell/vr_shell_ui.css

Index: chrome/browser/resources/vr_shell/vr_shell_ui.css
diff --git a/chrome/browser/resources/vr_shell/vr_shell_ui.css b/chrome/browser/resources/vr_shell/vr_shell_ui.css
index d48fa334e1917e0bd6fc75b4698786d207771ee0..f7242b0bf9acfa76ac39d6e4382d7ce5e3a5c6b5 100644
--- a/chrome/browser/resources/vr_shell/vr_shell_ui.css
+++ b/chrome/browser/resources/vr_shell/vr_shell_ui.css
@@ -100,15 +100,15 @@ html {
 }
 
 #back .button {
-  background-image: url(../../../../ui/webui/resources/images/vr_back.svg);
+  background-image: url(images/back.svg);
 }
 
 #reload .button {
-  background-image: url(../../../../ui/webui/resources/images/vr_reload.svg);
+  background-image: url(images/reload.svg);
 }
 
 #forward .button {
-  background-image: url(../../../../ui/webui/resources/images/vr_back.svg);
+  background-image: url(images/back.svg);
   transform: scaleX(-1);
 }
 
@@ -151,7 +151,8 @@ html {
   max-width: 448px;
 }
 
-#omni .connection-security {
+#omni-icon {
+  flex: none;
   height: 50px;
   margin-right: 10px;
   width: 50px;