Remove search::GetSearchTerms since it always returns empty string

components/omnibox/browser/zero_suggest_provider_unittest.cc

 // Copyright 2014 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 "components/omnibox/browser/zero_suggest_provider.h"
 
 #include "base/metrics/field_trial.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "components/history/core/browser/top_sites.h"
@@ skipping 310 matching lines @@
                               base::ASCIIToUTF16("Foo"));
   urls.push_back(url);
 
   provider_->Start(input, false);
   EXPECT_TRUE(provider_->matches().empty());
   // Stop() doesn't always get called.
 
   std::string search_url("https://www.google.com/?q=flowers");
   AutocompleteInput srp_input(
       base::ASCIIToUTF16(search_url), base::string16::npos, std::string(),
-      GURL(search_url), metrics::OmniboxEventProto::
-                            SEARCH_RESULT_PAGE_DOING_SEARCH_TERM_REPLACEMENT,
+      GURL(search_url),
+      metrics::OmniboxEventProto::SEARCH_RESULT_PAGE_NO_SEARCH_TERM_REPLACEMENT,
       false, false, true, true, true, TestSchemeClassifier());
 
   provider_->Start(srp_input, false);
   EXPECT_TRUE(provider_->matches().empty());
   // Most visited results arriving after a new request has been started.
   scoped_refptr<history::TopSites> top_sites = client_->GetTopSites();
   static_cast<FakeEmptyTopSites*>(top_sites.get())->mv_callback.Run(urls);
   EXPECT_TRUE(provider_->matches().empty());
 }
 
@@ skipping 110 matching lines @@
 
   base::RunLoop().RunUntilIdle();
 
   // Expect that the matches have been cleared.
   ASSERT_TRUE(provider_->matches().empty());
 
   // Expect the new results have been stored.
   EXPECT_EQ(empty_response,
             prefs->GetString(omnibox::kZeroSuggestCachedResults));
 }