Experimental AutocompleteProvider for zerosuggest.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index c1421d493c2bd502aabd41183eb2b7c5178064b4..51327a1012c0fc4c4fc187d2950c80b590765af2 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -679,6 +679,11 @@ const char kEnableWebSocketOverSpdy[]       = "enable-websocket-over-spdy";
 const char kExperimentalSpellcheckerFeatures[] =
     "experimental-spellchecker-features";
 
+// If nonempty, fetch experimental zero-suggest suggestions by appending to
+// this prefix of a URL.
+const char kExperimentalZeroSuggestURLPrefix[] =
+    "experimental-zero-suggest-url-prefix";
+
 // Explicitly allows additional ports using a comma-separated list of port
 // numbers.
 const char kExplicitlyAllowedPorts[]        = "explicitly-allowed-ports";