Enable Chrome to tweak search engines for some locales

components/search_engines/template_url_prepopulate_data.h

 // 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.
 
 #ifndef COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_H_
 #define COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_H_
 
 #include <stddef.h>
 
 #include <memory>
@@ skipping 17 matching lines @@
 
 extern const int kMaxPrepopulatedEngineID;
 
 void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
 // Returns the current version of the prepopulate data, so callers can know when
 // they need to re-merge. If the prepopulate data comes from the preferences
 // file then it returns the version specified there.
 int GetDataVersion(PrefService* prefs);
 
-// Loads the set of TemplateURLs from the prepopulate data. On return,
+// Returns the prepopulated URLs for the current country.
 // |default_search_provider_index| is set to the index of the default search
-// provider.
+// provider within the returned vector.
 std::vector<std::unique_ptr<TemplateURLData>> GetPrepopulatedEngines(
     PrefService* prefs,
     size_t* default_search_provider_index);
 
+#if defined(OS_ANDROID)
+// Returns the prepopulated URLs associated with |locale|, if it differs from
+// the current country.  |locale| should be a two-character uppercase ISO 3166-1
+// country code. If the given locale is the same as the existing locale, return

[Peter Kasting, 2016/09/23 01:28:36]

Nit: returns

[Ian Wen, 2016/09/23 22:01:57]

Done.

+// an empty vector.
+std::vector<std::unique_ptr<TemplateURLData>> GetLocalPrepopulatedEngines(
+    const std::string& locale,
+    PrefService* prefs);
+#endif
+
 // Returns all prepopulated engines for all locales. Used only by tests.
 std::vector<const PrepopulatedEngine*> GetAllPrepopulatedEngines();
 
 // Returns a TemplateURLData for the specified prepopulated engine.
 std::unique_ptr<TemplateURLData> MakeTemplateURLDataFromPrepopulatedEngine(
     const PrepopulatedEngine& engine);
 
 // Removes prepopulated engines and their version stored in user prefs.
 void ClearPrepopulatedEnginesInPrefs(PrefService* prefs);
 
@@ skipping 12 matching lines @@
 // of search engines when user switches device region settings. For use on iOS
 // only.
 // TODO(ios): Once user can customize search engines ( http://crbug.com/153047 )
 // this declaration should be removed and the definition in the .cc file be
 // moved back to the anonymous namespace.
 int GetCurrentCountryID();
 
 }  // namespace TemplateURLPrepopulateData
 
 #endif  // COMPONENTS_SEARCH_ENGINES_TEMPLATE_URL_PREPOPULATE_DATA_H_