[Search] Make the feature name link to a learn more screen in the first-run experience.

chrome/browser/search/contextual_search_promo_source_android.cc

Index: chrome/browser/search/contextual_search_promo_source_android.cc
diff --git a/chrome/browser/search/contextual_search_promo_source_android.cc b/chrome/browser/search/contextual_search_promo_source_android.cc
index 8a93de37a4bc716f35025bcfeacf9c7aff0b0848..7cf96e18ff1c6c068b10426c87ffff9fdb9618dc 100644
--- a/chrome/browser/search/contextual_search_promo_source_android.cc
+++ b/chrome/browser/search/contextual_search_promo_source_android.cc
@@ -87,9 +87,17 @@ void ContextualSearchPromoSourceAndroid::SendResource(
 void ContextualSearchPromoSourceAndroid::SendHtmlWithStrings(
     const content::URLDataSource::GotDataCallback& callback) {
   base::DictionaryValue strings_data;
+  // The three following statements are part of the description paragraph.
   strings_data.SetString(
-      "description",
-      l10n_util::GetStringUTF16(IDS_CONTEXTUAL_SEARCH_PROMO_DESCRIPTION));
+      "description-1",
+      l10n_util::GetStringUTF16(IDS_CONTEXTUAL_SEARCH_PROMO_DESCRIPTION_1));
+  strings_data.SetString(
+      "feature-name",
+      l10n_util::GetStringUTF16(IDS_CONTEXTUAL_SEARCH_PROMO_FEATURE_NAME));
+  strings_data.SetString(
+      "description-2",
+      l10n_util::GetStringUTF16(IDS_CONTEXTUAL_SEARCH_PROMO_DESCRIPTION_2));
+
   strings_data.SetString(
       "heading", l10n_util::GetStringUTF16(IDS_CONTEXTUAL_SEARCH_HEADER));
   strings_data.SetString(