Handle interface to prerenders.

chrome/browser/autocomplete/autocomplete_match.h

Index: chrome/browser/autocomplete/autocomplete_match.h
diff --git a/chrome/browser/autocomplete/autocomplete_match.h b/chrome/browser/autocomplete/autocomplete_match.h
index e26e3477edd7b9b53c379d80e20cdbff116741e3..073c341eee61f71457da65caf3b92863e4d4c966 100644
--- a/chrome/browser/autocomplete/autocomplete_match.h
+++ b/chrome/browser/autocomplete/autocomplete_match.h
@@ -10,6 +10,7 @@
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
+#include "chrome/browser/prerender/prerender_handle.h"
 #include "content/public/common/page_transition_types.h"
 #include "googleurl/src/gurl.h"
 
@@ -274,6 +275,9 @@ struct AutocompleteMatch {
   // True if this match is from a previous result.
   bool from_previous;
 
+  // The prerender (if any) associated with this match.
+  mutable prerender::WeakPrerenderHandle prerender;

[dominich, 2012/06/18 15:32:44]

I thought we discussed this at length and decided that adding the prerender to
the AutocompleteMatch was a bad idea. The handle should be stored by the
AutocompletePredictor when it starts the prerender, not by the autocomplete
system.

At least, that's how I expect it to be. If you have good reason to change that
approach please let me know.

The requirement for mutable also suggests to me that this is not the best place
for it.

+
 #ifndef NDEBUG
   // Does a data integrity check on this match.
   void Validate() const;