Experimental AutocompleteProvider for zerosuggest.

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 d544f01fee3137f109780fe574f5eeb91ff6c7e3..95afddeb26227e02b44491087a5e13665f013bf2 100644
--- a/chrome/browser/autocomplete/autocomplete_match.h
+++ b/chrome/browser/autocomplete/autocomplete_match.h
@@ -87,6 +87,9 @@ struct AutocompleteMatch {
                              // containing the input.
     SEARCH_SUGGEST,          // A suggested search (with the default engine).
     SEARCH_OTHER_ENGINE,     // A search with a non-default engine.
+    SEARCH_ZEROSUGGEST,      // A suggested search (with the default engine)
+                             // based on the current URL.
+    SEARCH_ZEROSUGGEST_URL,  // A URL suggested by zerosuggest.

[Peter Kasting, 2012/08/14 19:20:02]

SEARCH_ZEROSUGGEST_URL is a contradiction.

It's not clear to me why you need new types anyway.  SEARCH_SUGGEST and
NAVSUGGEST seem like existing types that would serve you fine.

[Jered, 2012/08/14 22:27:11]

Done.

     EXTENSION_APP,           // An Extension App with a title/url that contains
                              // the input.
     NUM_TYPES,