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 f0167c2e2c907f9cfe4d213e8a2992d03560b419..b7b37b96042191d0875a449bb12df7f688c3d9e3 100644
--- a/chrome/browser/instant/instant_page.h
+++ b/chrome/browser/instant/instant_page.h
@@ -139,6 +139,10 @@ class InstantPage : public content::WebContentsObserver {
   // Tells the page about the font information.
   void InitializeFonts();
 
+  // Grant browser-side RenderViewHost bindings and renderer-side chrome-search:
+  // access rights for select origins.
+  void GrantAccessFromOrigin(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();