Continue to clean c_str() calls.

components/omnibox/browser/builtin_provider.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 "components/omnibox/browser/builtin_provider.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 
@@ skipping 50 matching lines @@
     for (base::string16 url : client_->GetBuiltinsToProvideAsUserTypes())
       AddMatch(url, base::string16(), styles);
   } else {
     // Match input about: or |embedderAbout| URL input against builtin URLs.
     GURL url = url_formatter::FixupURL(base::UTF16ToUTF8(text), std::string());
     const bool text_ends_with_slash =
         base::EndsWith(text, base::ASCIIToUTF16("/"),
                        base::CompareCase::SENSITIVE);
     // BuiltinProvider doesn't know how to suggest valid ?query or #fragment
     // extensions to builtin URLs.
-    if (url.SchemeIs(
-            client_->GetEmbedderRepresentationOfAboutScheme().c_str()) &&
+    if (url.SchemeIs(client_->GetEmbedderRepresentationOfAboutScheme()) &&
         url.has_host() && !url.has_query() && !url.has_ref()) {
       // Suggest about:blank for substrings, taking URL fixup into account.
       // Chrome does not support trailing slashes or paths for about:blank.
       const base::string16 blank_host = base::ASCIIToUTF16("blank");
       const base::string16 host = base::UTF8ToUTF16(url.host());
       if (base::StartsWith(text, base::ASCIIToUTF16(url::kAboutScheme),
                            base::CompareCase::INSENSITIVE_ASCII) &&
           base::StartsWith(blank_host, host,
                            base::CompareCase::INSENSITIVE_ASCII) &&
           (url.path().length() <= 1) && !text_ends_with_slash) {
@@ skipping 56 matching lines @@
                                const ACMatchClassifications& styles) {
   AutocompleteMatch match(this, kRelevance, false,
                           AutocompleteMatchType::NAVSUGGEST);
   match.fill_into_edit = match_string;
   match.inline_autocompletion = inline_completion;
   match.destination_url = GURL(match_string);
   match.contents = match_string;
   match.contents_class = styles;
   matches_.push_back(match);
 }