rlz: Hook up on mac, switch to chrome's network stack on win.

chrome/browser/search_engines/template_url.cc

 // Copyright (c) 2012 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/search_engines/template_url.h"
 
 #include "base/i18n/case_conversion.h"
 #include "base/i18n/icu_string_conversions.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
@@ skipping 379 matching lines @@
         if (accepted_suggestion >= 0)
           url.insert(i->index, "oq=" + UTF16ToUTF8(encoded_original_query) +
                                "&");
         break;
 
       case GOOGLE_RLZ: {
         // On platforms that don't have RLZ, we still want this branch
         // to happen so that we replace the RLZ template with the
         // empty string.  (If we don't handle this case, we hit a
         // NOTREACHED below.)
-#if defined(OS_WIN) && defined(GOOGLE_CHROME_BUILD)
+#if defined(ENABLE_RLZ)
         string16 rlz_string = search_terms_data.GetRlzParameterValue();
         if (!rlz_string.empty()) {
-          rlz_string = L"rlz=" + rlz_string + L"&";
-          url.insert(i->index, UTF16ToUTF8(rlz_string));
+          url.insert(i->index, "rlz=" + UTF16ToUTF8(rlz_string) + "&");
         }
 #endif
         break;
       }
 
       case GOOGLE_SEARCH_FIELDTRIAL_GROUP:
         // We are not curerntly running any fieldtrials that modulate the search
         // url.  If we do, then we'd have some conditional insert such as:
         // url.insert(i->index, used_www ? "gcx=w&" : "gcx=c&");
         break;
@@ skipping 369 matching lines @@
 }
 
 std::string TemplateURL::GetExtensionId() const {
   DCHECK(IsExtensionKeyword());
   return GURL(url_.url()).host();
 }
 
 bool TemplateURL::IsExtensionKeyword() const {
   return GURL(url_.url()).SchemeIs(chrome::kExtensionScheme);
 }