Revert of Make extensions DSE persistent in browser prefs

components/search_engines/template_url.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/search_engines/template_url.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 147 matching lines @@
   parameter_position->begin = begin;
   parameter_position->len = arraysize(kSearchTermsParameterFullEscaped) - 1;
   return true;
 }
 
 bool IsTemplateParameterString(const std::string& param) {
   return (param.length() > 2) && (*(param.begin()) == kStartParameter) &&
       (*(param.rbegin()) == kEndParameter);
 }
 
+// Special case for search_terms_replacement_key comparison, because of
+// its special initialization in TemplateUrl constructor.
+bool SearchTermsReplacementKeysMatch(
+    const std::string& search_terms_replacement_key1,
+    const std::string& search_terms_replacement_key2) {
+  if (search_terms_replacement_key1 == search_terms_replacement_key2)
+    return true;
+  if (search_terms_replacement_key1 == google_util::kInstantExtendedAPIParam &&
+      search_terms_replacement_key2 == kGoogleInstantExtendedEnabledKeyFull)
+    return true;
+  if (search_terms_replacement_key2 == google_util::kInstantExtendedAPIParam &&
+      search_terms_replacement_key1 == kGoogleInstantExtendedEnabledKeyFull)
+    return true;
+  return false;
+}
+
 }  // namespace
 
 
 // TemplateURLRef::SearchTermsArgs --------------------------------------------
 
 TemplateURLRef::SearchTermsArgs::SearchTermsArgs(
     const base::string16& search_terms)
     : search_terms(search_terms),
       input_type(metrics::OmniboxInputType::INVALID),
       accepted_suggestion(NO_SUGGESTIONS_AVAILABLE),
@@ skipping 1080 matching lines @@
          (t_url->instant_url_post_params() == data->instant_url_post_params) &&
          (t_url->image_url_post_params() == data->image_url_post_params) &&
          (t_url->favicon_url() == data->favicon_url) &&
          (t_url->safe_for_autoreplace() == data->safe_for_autoreplace) &&
          (t_url->input_encodings() == data->input_encodings) &&
          (t_url->alternate_urls() == data->alternate_urls) &&
          SearchTermsReplacementKeysMatch(t_url->search_terms_replacement_key(),
                                          data->search_terms_replacement_key);
 }
 
-// static
-bool TemplateURL::SearchTermsReplacementKeysMatch(
-    const std::string& search_terms_replacement_key1,
-    const std::string& search_terms_replacement_key2) {
-  if (search_terms_replacement_key1 == google_util::kInstantExtendedAPIParam &&
-      search_terms_replacement_key2 == kGoogleInstantExtendedEnabledKeyFull)
-    return true;
-  if (search_terms_replacement_key2 == google_util::kInstantExtendedAPIParam &&
-      search_terms_replacement_key1 == kGoogleInstantExtendedEnabledKeyFull)
-    return true;
-  return search_terms_replacement_key1 == search_terms_replacement_key2;
-}
-
 base::string16 TemplateURL::AdjustedShortNameForLocaleDirection() const {
   base::string16 bidi_safe_short_name = data_.short_name();
   base::i18n::AdjustStringForLocaleDirection(&bidi_safe_short_name);
   return bidi_safe_short_name;
 }
 
 bool TemplateURL::SupportsReplacement(
     const SearchTermsData& search_terms_data) const {
   return url_ref_->SupportsReplacement(search_terms_data);
 }
@@ skipping 252 matching lines @@
       // patterns. This means that given patterns
       //    [ "http://foo/#q={searchTerms}", "http://foo/?q={searchTerms}" ],
       // calling ExtractSearchTermsFromURL() on "http://foo/?q=bar#q=' would
       // return false. This is important for at least Google, where such URLs
       // are invalid.
       return !search_terms->empty();
     }
   }
   return false;
 }