Add chrome-search: access from Instant overlay

chrome/browser/instant/instant_page.h

Index: chrome/browser/instant/instant_page.h
diff --git a/chrome/browser/instant/instant_page.h b/chrome/browser/instant/instant_page.h
index 1ad862605aa7daf77d5cb4dd70aba02b71bd84f2..024d44be4b148b524a409a2a68eaec934ebef3e1 100644
--- a/chrome/browser/instant/instant_page.h
+++ b/chrome/browser/instant/instant_page.h
@@ -141,6 +141,9 @@ class InstantPage : public content::WebContentsObserver {
   // Tells the page about the font information.
   void InitializeFonts();
 
+  // Grant renderer-side chrome-search: access rights for select origins.
+  void GrantChromeSearchAccessFromOrigin(const GURL& origin_url);
+
   // Tells the renderer to determine if the page supports the Instant API, which
   // results in a call to InstantSupportDetermined() when the reply is received.
   void DetermineIfPageSupportsInstant();