Don't autocomplete searches of >1 word if they've only been visited once and the user has not yet...

chrome/browser/autocomplete/autocomplete.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/autocomplete/autocomplete.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 541 matching lines @@
       url,
       languages,
       net::kFormatUrlOmitAll & ~(trim_http ? 0 : net::kFormatUrlOmitHTTP),
       UnescapeRule::SPACES, NULL, NULL, NULL);
 }
 
 // AutocompleteResult ---------------------------------------------------------
 
 // static
 const size_t AutocompleteResult::kMaxMatches = 6;
+const int AutocompleteResult::kLowestDefaultScore = 1200;
 
 void AutocompleteResult::Selection::Clear() {
   destination_url = GURL();
   provider_affinity = NULL;
   is_history_what_you_typed_match = false;
 }
 
 AutocompleteResult::AutocompleteResult() {
   // Reserve space for the max number of matches we'll show.
   matches_.reserve(kMaxMatches);
@@ skipping 455 matching lines @@
     }
   }
   done_ = true;
 }
 
 void AutocompleteController::StartExpireTimer() {
   if (result_.HasCopiedMatches())
     expire_timer_.Start(base::TimeDelta::FromMilliseconds(kExpireTimeMS),
                         this, &AutocompleteController::ExpireCopiedEntries);
 }