Add Yandex referral ID to search URL.

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 631 matching lines @@
 #endif
   } else if (parameter == "google:suggestAPIKeyParameter") {
     url->insert(start,
                 net::EscapeQueryParamValue(google_apis::GetAPIKey(), false));
   } else if (parameter == "google:suggestClient") {
     replacements->push_back(Replacement(GOOGLE_SUGGEST_CLIENT, start));
   } else if (parameter == "google:suggestRid") {
     replacements->push_back(Replacement(GOOGLE_SUGGEST_REQUEST_ID, start));
   } else if (parameter == kGoogleUnescapedSearchTermsParameter) {
     replacements->push_back(Replacement(GOOGLE_UNESCAPED_SEARCH_TERMS, start));
+  } else if (parameter == "yandex:referralID") {
+    replacements->push_back(Replacement(YANDEX_REFERRAL_ID, start));
   } else if (parameter == "yandex:searchPath") {
     switch (ui::GetDeviceFormFactor()) {
       case ui::DEVICE_FORM_FACTOR_DESKTOP:
         url->insert(start, "search/");
         break;
       case ui::DEVICE_FORM_FACTOR_PHONE:
         url->insert(start, "search/touch/");
         break;
       case ui::DEVICE_FORM_FACTOR_TABLET:
         url->insert(start, "search/pad/");
@@ skipping 456 matching lines @@
             &url);
         break;
 
       case GOOGLE_IOS_SEARCH_LANGUAGE:
 #if defined(OS_IOS)
         HandleReplacement("hl", search_terms_data.GetApplicationLocale(), *i,
                           &url);
 #endif
         break;
 
+      case YANDEX_REFERRAL_ID: {
+        DCHECK(!i->is_post_param);

[Peter Kasting, 2017/05/09 00:14:25]

Is this important?  Why?

[Ted C, 2017/05/09 04:38:32]

this and the comment below were blatantly cribbed from RLZ above.  I can remove
both entirely though.

+        // On platforms that don't have Referral ID, we still want this branch
+        // to happen so that we replace the Referral ID template with the
+        // empty string.  (If we don't handle this case, we hit a
+        // NOTREACHED below.)

[Peter Kasting, 2017/05/09 00:14:25]

I'm confused.  Is this referring to having a case for this at all?  If so I'd
just omit this comment, as it seems more confusing than helpful.

+        std::string referral_id = search_terms_data.YandexReferralID();
+        if (!referral_id.empty())
+          HandleReplacement("clid", referral_id, *i, &url);
+        break;
+      }
+
       default:
         NOTREACHED();
         break;
     }
   }
 
   if (!post_params_.empty())
     EncodeFormData(post_params_, post_content);
 
   return url;
@@ skipping 384 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;
 }