[Translate] Add Thailand to experiment

components/translate/core/browser/translate_experiment.cc

 // Copyright 2016 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/translate/core/browser/translate_experiment.h"
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/metrics/field_trial.h"
 #include "base/strings/string_util.h"
@@ skipping 24 matching lines @@
     *ui_lang = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
         kForceTranslateLanguage);
     return;
   }
 
   // Otherwise, base the target language on the current country.
   if (country == "my")
     *ui_lang = "ms";
   else if (country == "id")
     *ui_lang = "id";
+  else if (country == "th")
+    *ui_lang = "th";
 }
 
 // static
 bool TranslateExperiment::ShouldOverrideBlocking(const std::string& ui_language,
                                                  const std::string& language) {
   return InExperiment() && (language == ui_language);
 }
 
 // static
 bool TranslateExperiment::InExperiment() {
   // Note: It's important to query the field trial state first, to ensure that
   // UMA reports the correct group.
   const std::string group_name =
       base::FieldTrialList::FindFullName(kTranslateExperimentTrial);
   if (CommandLine::ForCurrentProcess()->HasSwitch(kDisableTranslateExperiment))
     return false;
   // TODO(groby): Figure out if we can get rid of the enable branch completely.
   // Or, if we allow enable, we have to gate this on country. I'd rather not,
   // since this complicates the experiment.
   if (CommandLine::ForCurrentProcess()->HasSwitch(kEnableTranslateExperiment))
     return true;
   if (CommandLine::ForCurrentProcess()->HasSwitch(kForceTranslateLanguage))
     return true;
   // Use StartsWith() for more flexibility (e.g. multiple Enabled groups).
   return base::StartsWith(group_name, "Enabled",
                           base::CompareCase::INSENSITIVE_ASCII);
 }
 
 }  // namespace translate