**NOTFORLANDING** Example slowdown for disk cache stress test

net/disk_cache/simple/simple_synchronous_entry.cc

Index: net/disk_cache/simple/simple_synchronous_entry.cc
diff --git a/net/disk_cache/simple/simple_synchronous_entry.cc b/net/disk_cache/simple/simple_synchronous_entry.cc
index 864c05ac8ac7263cb69726376b0c4827f8b96004..e929b0657b599e27cd9c65f00578a78aaa48ee13 100644
--- a/net/disk_cache/simple/simple_synchronous_entry.cc
+++ b/net/disk_cache/simple/simple_synchronous_entry.cc
@@ -9,6 +9,7 @@
 #include <functional>
 #include <limits>
 
+#include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/files/file_util.h"
 #include "base/hash.h"
@@ -25,6 +26,8 @@
 #include "net/disk_cache/simple/simple_util.h"
 #include "third_party/zlib/zlib.h"
 
+#include <unistd.h>
+
 using base::File;
 using base::FilePath;
 using base::Time;
@@ -266,6 +269,10 @@ void SimpleSynchronousEntry::CreateEntry(
     return;
   }
   out_results->sync_entry = sync_entry;
+  if (base::CommandLine::ForCurrentProcess()-> HasSwitch(
+          "simple-cache-slower-creates")) {
+    usleep(20 * 1000);
+  }
 }
 
 // static