Introduce a field trial for Instant.

chrome/browser/autocomplete/search_provider_unittest.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/search_provider.h"
 
 #include "base/string_util.h"
 #include "base/time.h"
 #include "base/utf_string_conversions.h"
 #include "build/build_config.h"
@@ skipping 540 matching lines @@
   history->AddPageWithDetails(term_url, string16(), 1, 1,
                               base::Time::Now(), false,
                               history::SOURCE_BROWSED);
   history->SetKeywordSearchTermsForURL(term_url, keyword_t_url_->id(), term);
 
   profile_.BlockUntilHistoryProcessesPendingRequests();
 
   ACProviders providers;
   SearchProvider* provider = provider_.release();
   providers.push_back(provider);
-  AutocompleteController controller(providers);
+  AutocompleteController controller(providers, &profile_);
   provider->set_listener(&controller);
   controller.Start(ASCIIToUTF16("k t"), string16(), false, false, true,
                    AutocompleteInput::ALL_MATCHES);
   const AutocompleteResult& result = controller.result();
 
   // There should be two matches, one for the keyword one for what you typed.
   ASSERT_EQ(2u, result.size());
 
   EXPECT_TRUE(result.match_at(0).template_url != NULL);
   EXPECT_TRUE(result.match_at(1).template_url != NULL);
   EXPECT_NE(result.match_at(0).template_url,
             result.match_at(1).template_url);
 
   EXPECT_FALSE(result.match_at(0).description.empty());
   EXPECT_FALSE(result.match_at(1).description.empty());
   EXPECT_NE(result.match_at(0).description,
             result.match_at(1).description);
 }