Do not do unnecessary recursive deletes for files.

chrome/browser/chromeos/system_logs/debug_log_writer.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 "chrome/browser/chromeos/system_logs/debug_log_writer.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/command_line.h"
@@ skipping 104 matching lines @@
     const base::FilePath& tar_file_path,
     const base::FilePath& compressed_output_path,
     const DebugLogWriter::StoreLogsCallback& callback,
     bool compression_command_success) {
   if (!compression_command_success) {
     LOG(ERROR) << "Failed compressing " << compressed_output_path.value();
     content::BrowserThread::PostTask(
         content::BrowserThread::UI,
         FROM_HERE,
         base::Bind(callback, base::FilePath(), false));
-    base::DeleteFile(tar_file_path, true);
-    base::DeleteFile(compressed_output_path, true);
+    base::DeleteFile(tar_file_path, false);
+    base::DeleteFile(compressed_output_path, false);
     return;
   }
 
   content::BrowserThread::PostTask(
       content::BrowserThread::UI,
       FROM_HERE,
       base::Bind(callback, compressed_output_path, true));
 }
 
 // Gzips |tar_file_path| and stores results in |compressed_output_path|.
 void CompressArchive(const base::FilePath& tar_file_path,
                      const base::FilePath& compressed_output_path,
                      const DebugLogWriter::StoreLogsCallback& callback,
                      bool add_user_logs_command_success) {
   if (!add_user_logs_command_success) {
     LOG(ERROR) << "Failed adding user logs to " << tar_file_path.value();
     content::BrowserThread::PostTask(
         content::BrowserThread::UI,
         FROM_HERE,
         base::Bind(callback, base::FilePath(), false));
-    base::DeleteFile(tar_file_path, true);
+    base::DeleteFile(tar_file_path, false);
     return;
   }
 
   std::vector<std::string> argv;
   argv.push_back(kGzipCommand);
   argv.push_back(tar_file_path.value());
   RunCommand(argv,
              base::Bind(&OnCompressArchiveCompleted,
                         tar_file_path,
                         compressed_output_path,
@@ skipping 108 matching lines @@
       fileshelf.Append(FILE_PATH_LITERAL("combined-logs.tar"));
 
   // Get system logs from /var/log first, then add user-specific stuff.
   StartLogRetrieval(file_path,
                     false,
                     sequence_token_name,
                     base::Bind(&OnSystemLogsAdded, callback));
 }
 
 }  // namespace chromeos