Update from https://crrev.com/327068

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 651 matching lines @@
     DLOG(WARNING) << "Failed to open " << meminfo_file.value();
     return false;
   }
 
   if (!ParseProcMeminfo(meminfo_data, meminfo)) {
     DLOG(WARNING) << "Failed to parse " << meminfo_file.value();
     return false;
   }
 
 #if defined(OS_CHROMEOS)
-  // Report on Chrome OS GEM object graphics memory. /var/run/debugfs_gpu is a
+  // Report on Chrome OS GEM object graphics memory. /run/debugfs_gpu is a
   // bind mount into /sys/kernel/debug and synchronously reading the in-memory
   // files in /sys is fast.
 #if defined(ARCH_CPU_ARM_FAMILY)
-  FilePath geminfo_file("/var/run/debugfs_gpu/exynos_gem_objects");
+  FilePath geminfo_file("/run/debugfs_gpu/exynos_gem_objects");
 #else
-  FilePath geminfo_file("/var/run/debugfs_gpu/i915_gem_objects");
+  FilePath geminfo_file("/run/debugfs_gpu/i915_gem_objects");
 #endif
   std::string geminfo_data;
   meminfo->gem_objects = -1;
   meminfo->gem_size = -1;
   if (ReadFileToString(geminfo_file, &geminfo_data)) {
     int gem_objects = -1;
     long long gem_size = -1;
     int num_res = sscanf(geminfo_data.c_str(),
                          "%d objects, %lld bytes",
                          &gem_objects, &gem_size);
@@ skipping 218 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