Allow add to homescreen and app banner strings to be changed via variations.

chrome/browser/banners/app_banner_settings_helper.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 "chrome/browser/banners/app_banner_settings_helper.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 63 matching lines @@
 // Keys to use when querying the variations params.
 const char kBannerParamsKey[] = "AppBannerTriggering";
 const char kBannerParamsDirectKey[] = "direct";
 const char kBannerParamsIndirectKey[] = "indirect";
 const char kBannerParamsTotalKey[] = "total";
 const char kBannerParamsMinutesKey[] = "minutes";
 const char kBannerParamsEngagementTotalKey[] = "site_engagement_total";
 const char kBannerParamsDaysAfterBannerDismissedKey[] = "days_after_dismiss";
 const char kBannerParamsDaysAfterBannerIgnoredKey[] = "days_after_ignore";
 const char kBannerSiteEngagementParamsKey[] = "use_site_engagement";
+const char kBannerParamsLanguageKey[] = "language_option";
 
 // Engagement weight assigned to direct and indirect navigations.
 // By default, a direct navigation is a page visit via ui::PAGE_TRANSITION_TYPED
 // or ui::PAGE_TRANSITION_GENERATED.
 double gDirectNavigationEngagement = kDefaultDirectNavigationEngagement;
 double gIndirectNavigationEnagagement = kDefaultIndirectNavigationEngagement;
 
 // Number of minutes between visits that will trigger a could show banner event.
 // Defaults to the number of minutes in a day.
 unsigned int gMinimumMinutesBetweenVisits = kNumberOfMinutesInADay;
@@ skipping 573 matching lines @@
   // engagement to trigger from the params variations.
   UpdateDaysBetweenShowing();
   if (ShouldUseSiteEngagementScore()) {
     UpdateSiteEngagementToTrigger();
   } else {
     UpdateEngagementWeights();
     UpdateMinutesBetweenVisits();
   }
 }
 
+AppBannerSettingsHelper::LanguageOption
+AppBannerSettingsHelper::GetHomescreenLanguageOption() {
+  std::string param = variations::GetVariationParamValue(
+      kBannerParamsKey, kBannerParamsLanguageKey);
+  unsigned int language_option = 0;
+
+  if (param.empty() || !base::StringToUint(param, &language_option) ||
+      language_option < LANGUAGE_OPTION_MIN ||
+      language_option > LANGUAGE_OPTION_MAX) {
+    return LANGUAGE_OPTION_DEFAULT;
+  }
+
+  return static_cast<LanguageOption>(language_option);
+}
+
 bool AppBannerSettingsHelper::ShouldUseSiteEngagementScore() {
   if (base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kEnableSiteEngagementAppBanner)) {
     return true;
   }
 
   // Assume any value which is not "0" or "false" indicates that we should use
   // site engagement.
   std::string param = variations::GetVariationParamValue(
       kBannerParamsKey, kBannerSiteEngagementParamsKey);
 
   return (!param.empty() && param != "0" && param != "false");
 }