Remove remaining legacy SplitString calls.

base/process/process_metrics_linux.cc

 // Copyright (c) 2013 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_metrics.h"
 
 #include <dirent.h>
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <sys/time.h>
@@ skipping 298 matching lines @@
 
   std::string totmaps_data;
   {
     FilePath totmaps_file = internal::GetProcPidDir(process_).Append("totmaps");
     ThreadRestrictions::ScopedAllowIO allow_io;
     bool ret = ReadFileToString(totmaps_file, &totmaps_data);
     if (!ret || totmaps_data.length() == 0)
       return false;
   }
 
-  std::vector<std::string> totmaps_fields;
-  SplitStringAlongWhitespace(totmaps_data, &totmaps_fields);
+  std::vector<std::string> totmaps_fields = SplitString(
+      totmaps_data, base::kWhitespaceASCII, base::KEEP_WHITESPACE,
+      base::SPLIT_WANT_NONEMPTY);
 
   DCHECK_EQ("Pss:", totmaps_fields[kPssIndex-1]);
   DCHECK_EQ("Private_Clean:", totmaps_fields[kPrivate_CleanIndex - 1]);
   DCHECK_EQ("Private_Dirty:", totmaps_fields[kPrivate_DirtyIndex - 1]);
   DCHECK_EQ("Swap:", totmaps_fields[kSwapIndex-1]);
 
   int pss = 0;
   int private_clean = 0;
   int private_dirty = 0;
   int swap = 0;
@@ skipping 572 matching lines @@
 #if defined(OS_LINUX)
 int ProcessMetrics::GetIdleWakeupsPerSecond() {
   uint64 wake_ups;
   const char kWakeupStat[] = "se.statistics.nr_wakeups";
   return ReadProcSchedAndGetFieldAsUint64(process_, kWakeupStat, &wake_ups) ?
       CalculateIdleWakeupsPerSecond(wake_ups) : 0;
 }
 #endif  // defined(OS_LINUX)
 
 }  // namespace base