Shows chrome-extension urls and greys out the whole url.

chrome/browser/ui/toolbar/toolbar_model_impl.cc

Index: chrome/browser/ui/toolbar/toolbar_model_impl.cc
diff --git a/chrome/browser/ui/toolbar/toolbar_model_impl.cc b/chrome/browser/ui/toolbar/toolbar_model_impl.cc
index 4e63e235f8b0f0ee97b403c18fcbcb9d8d11e715..baee746bcc620da28012b76c1f3a44f658d1d88c 100644
--- a/chrome/browser/ui/toolbar/toolbar_model_impl.cc
+++ b/chrome/browser/ui/toolbar/toolbar_model_impl.cc
@@ -179,6 +179,13 @@ bool ToolbarModelImpl::ShouldDisplayURL() const {
   return true;
 }
 
+bool ToolbarModelImpl::ShouldGreyOutURL() const {
+  WebContents* web_contents = delegate_->GetActiveWebContents();
+  if (web_contents && web_contents->GetWebUIForCurrentState())

[sky, 2013/04/03 04:03:57]

nit: make this a single return, eg:
return web_contents && web_contents->.. && web_contents()->GetWe...

+    return web_contents->GetWebUIForCurrentState()->ShouldGreyOutURL();
+  return false;
+}
+
 ToolbarModel::SecurityLevel ToolbarModelImpl::GetSecurityLevel() const {
   if (input_in_progress_)  // When editing, assume no security style.
     return NONE;