Fix split in base::ProcessIsProcessBackgrounded()

base/process/process_linux.cc

 // Copyright (c) 2011 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 "base/process/process.h"
 
 #include <errno.h>
 #include <sys/resource.h>
 
 #include "base/files/file_util.h"
@@ skipping 122 matching lines @@
   DPCHECK(result == 0);
   return result == 0;
 }
 
 #if defined(OS_CHROMEOS)
 bool IsProcessBackgroundedCGroup(const StringPiece& cgroup_contents) {
   // The process can be part of multiple control groups, and for each cgroup
   // hierarchy there's an entry in the file. We look for a control group
   // named "/chrome_renderers/background" to determine if the process is
   // backgrounded. crbug.com/548818.
-  std::vector<StringPiece> lines =
-      SplitStringPiece(cgroup_contents, "\n", TRIM_WHITESPACE, SPLIT_WANT_ALL);
+  std::vector<StringPiece> lines = SplitStringPiece(
+      cgroup_contents, "\n", TRIM_WHITESPACE, SPLIT_WANT_NONEMPTY);
   for (const auto& line : lines) {
     std::vector<StringPiece> fields =
         SplitStringPiece(line, ":", TRIM_WHITESPACE, SPLIT_WANT_ALL);
     if (fields.size() != 3U) {
       NOTREACHED();
       continue;
     }
     if (fields[2] == kBackground)
       return true;
   }
 
   return false;
 }
 #endif  // defined(OS_CHROMEOS)
 
 }  // namespace base