Update //base to chromium 9659b08ea5a34f889dc4166217f438095ddc10d2

base/process/process_linux.cc

Index: base/process/process_linux.cc
diff --git a/base/process/process_linux.cc b/base/process/process_linux.cc
index 88a310eccdb9cf003bea9276885425f24c725824..6e10dd2301fb6064e4b82ec6984d089517e549d3 100644
--- a/base/process/process_linux.cc
+++ b/base/process/process_linux.cc
@@ -10,6 +10,7 @@
 #include "base/files/file_util.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_split.h"
 #include "base/strings/stringprintf.h"
 #include "base/synchronization/lock.h"
@@ -119,7 +120,7 @@ bool Process::SetProcessBackgrounded(bool background) {
 
 #if defined(OS_CHROMEOS)
   if (cgroups.Get().enabled) {
-    std::string pid = StringPrintf("%d", process_);
+    std::string pid = IntToString(process_);
     const base::FilePath file =
         background ?
             cgroups.Get().background_file : cgroups.Get().foreground_file;