Rewrite std::string("") to std::string(), Linux edition.

chrome/common/child_process_logging_posix.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/common/child_process_logging.h"
 
 #include "base/command_line.h"
 #include "base/format_macros.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 48 matching lines @@
     kMaxVariationChunkSize * kMaxReportedVariationChunks + 1;
 char g_variation_chunks[kMaxVariationChunksSize] = "";
 
 void SetActiveURL(const GURL& url) {
   base::strlcpy(g_active_url, url.possibly_invalid_spec().c_str(),
                 arraysize(g_active_url));
 }
 
 void SetClientId(const std::string& client_id) {
   std::string str(client_id);
-  ReplaceSubstringsAfterOffset(&str, 0, "-", "");
+  ReplaceSubstringsAfterOffset(&str, 0, "-", std::string());
 
   if (str.empty())
     return;
 
   base::strlcpy(g_client_id, str.c_str(), kClientIdSize);
   std::wstring wstr = ASCIIToWide(str);
   GoogleUpdateSettings::SetMetricsId(wstr);
 }
 
 std::string GetClientId() {
@@ skipping 89 matching lines @@
   // simultaneously.
   snprintf(g_num_variations, arraysize(g_num_variations), "%" PRIuS,
            experiments.size());
 }
 
 void SetChannel(const std::string& channel) {
   base::strlcpy(g_channel, channel.c_str(), arraysize(g_channel));
 }
 
 }  // namespace child_process_logging