Revert of Replace system IO calls in chromecast/crash with Chrome utilities.

chromecast/crash/linux/synchronized_minidump_manager.cc

 // Copyright 2015 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 "chromecast/crash/linux/synchronized_minidump_manager.h"
 
 #include <dirent.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <grp.h>
@@ skipping 135 matching lines @@
   std::ifstream in(lockfile_path_);
   if (!in.is_open()) {
     NOTREACHED();
     LOG(ERROR) << lockfile_path_ << " could not be opened.";
     return -1;
   }
 
   // Grab each entry.
   while (std::getline(in, entry)) {
     scoped_ptr<DumpInfo> info(new DumpInfo(entry));
-    if (info->valid() && info->crashed_process_dump().size() > 0)
+    if (info->valid() && info->crashed_process_dump().size() > 0) {
       dumps->push_back(info.Pass());
-    else
-      LOG(WARNING) << "Ignoring invalid entry: " << entry;
+    } else {
+      LOG(WARNING) << "Entry is not valid: " << entry;
+      return -1;
+    }
   }
 
   dump_metadata_ = dumps.Pass();
   return 0;
 }
 
 int SynchronizedMinidumpManager::AddEntryToLockFile(const DumpInfo& dump_info) {
   DCHECK_LE(0, lockfile_fd_);
 
   // Make sure dump_info is valid.
@@ skipping 38 matching lines @@
     close(lockfile_fd_);
 
     // We may use this object again, so we should reset this.
     lockfile_fd_ = -1;
   }
 
   dump_metadata_.reset();
 }
 
 }  // namespace chromecast