Added prerendering to omnibox.

chrome/browser/instant/instant_controller.cc

Index: chrome/browser/instant/instant_controller.cc
diff --git a/chrome/browser/instant/instant_controller.cc b/chrome/browser/instant/instant_controller.cc
index 592c0e3c1004ce28ab3e541f076ece07c9befd02..b742c0c3303bb782ad68af985b584d5e5713e445 100644
--- a/chrome/browser/instant/instant_controller.cc
+++ b/chrome/browser/instant/instant_controller.cc
@@ -15,6 +15,7 @@
 #include "chrome/browser/instant/promo_counter.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prefs/pref_service.h"
+#include "chrome/browser/prerender/prerender_manager.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/search_engines/template_url.h"
 #include "chrome/browser/search_engines/template_url_service.h"
@@ -169,6 +170,14 @@ void InstantController::Update(TabContentsWrapper* tab_contents,
 
   if (!ShouldShowPreviewFor(match, &template_url)) {
     DestroyPreviewContentsAndLeaveActive();
+    // Start Prerender of this page instead.
+    CommandLine* cl = CommandLine::ForCurrentProcess();

[sky, 2011/06/20 18:15:54]

Seems like you only want to do this if you hit the last if in
ShouldShouldPreviewFor.

[dominich, 2011/06/20 18:40:00]

You're right. I didn't think it would matter that much and this feels like the
right place, but prerendering when the host is blacklisted or it's a javascript
scheme probably isn't a good idea.

Moved.

+    if (cl->HasSwitch(switches::kPrerenderFromOmnibox)) {
+      prerender::PrerenderManager* prerender_manager =
+          tab_contents_->profile()->GetPrerenderManager();
+      if (prerender_manager)
+        prerender_manager->AddPrerenderWithNoTag(match.destination_url);
+    }
     return;
   }