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

chrome/browser/google_apis/drive_api_operations.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/google_apis/drive_api_operations.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/json/json_writer.h"
 #include "base/values.h"
@@ skipping 182 matching lines @@
       directory_name_(directory_name) {
   DCHECK(!callback.is_null());
 }
 
 CreateDirectoryOperation::~CreateDirectoryOperation() {}
 
 GURL CreateDirectoryOperation::GetURL() const {
   if (parent_resource_id_.empty() || directory_name_.empty()) {
     return GURL();
   }
-  return url_generator_.GetFilelistUrl(GURL(), "");
+  return url_generator_.GetFilelistUrl(GURL(), std::string());
 }
 
 net::URLFetcher::RequestType CreateDirectoryOperation::GetRequestType() const {
   return net::URLFetcher::POST;
 }
 
 bool CreateDirectoryOperation::GetContentData(std::string* upload_content_type,
                                               std::string* upload_content) {
   *upload_content_type = kContentTypeApplicationJson;
 
@@ skipping 325 matching lines @@
 
 ResumeUploadOperation::~ResumeUploadOperation() {}
 
 void ResumeUploadOperation::OnRangeOperationComplete(
     const UploadRangeResponse& response, scoped_ptr<base::Value> value) {
   ParseFileResourceWithUploadRangeAndRun(callback_, response, value.Pass());
 }
 
 }  // namespace drive
 }  // namespace google_apis