This makes net_perftests build and run on Linux.

net/SConscript

 # Copyright (c) 2006-2008 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.
 
 Import('env')
 
 env_res = env.Clone()
 env_tests = env.Clone()
 env = env.Clone()
 
@@ skipping 264 matching lines @@
 
 if env['PLATFORM'] == 'darwin':
   unittest_files.extend([
       '../base/platform_test_mac.o',
   ])
 
 net_unittests = env_tests.ChromeTestProgram('net_unittests', unittest_files)
 
 install_targets = net_unittests[:]
 
+if env['PLATFORM'] in ('posix', 'win32'):
+
+  net_perftests = env_tests.ChromeTestProgram(
+      'net_perftests',
+      ['disk_cache/disk_cache_test_util.cc',
+       'disk_cache/disk_cache_perftest.cc',
+       'base/cookie_monster_perftest.cc',
+       # TODO(sgk): avoid using .cc from base directly
+       '$BASE_DIR/run_all_perftests$OBJSUFFIX',
+       '$BASE_DIR/perftimer$OBJSUFFIX']
+  )
+
+  install_targets.extend([
+      net_perftests
+  ])
+
 if env['PLATFORM'] == 'win32':
   stress_cache = env_tests.ChromeTestProgram(
       'stress_cache',
       ['disk_cache/stress_cache.cc',
        'disk_cache/disk_cache_test_util.cc']
   )
 
   crash_cache = env_tests.ChromeTestProgram(
       'crash_cache',
       ['tools/crash_cache/crash_cache.cc',
        'disk_cache/disk_cache_test_util.cc']
   )
 
-  net_perftests = env_tests.ChromeTestProgram(
-      'net_perftests',
-      ['disk_cache/disk_cache_test_util.cc',
-       'disk_cache/disk_cache_perftest.cc',
-       'base/cookie_monster_perftest.cc',
-       # TODO(sgk): avoid using .cc from base directly
-       '$BASE_DIR/run_all_perftests$OBJSUFFIX',
-       '$BASE_DIR/perftimer$OBJSUFFIX']
-  )
-
   install_targets.extend([
       stress_cache,
       crash_cache,
-      net_perftests,
   ])
 
 
 # Create install of tests.
 installed_tests = env.Install('$TARGET_ROOT', install_targets)
 
 
 if env['PLATFORM'] == 'win32':
   env_res.Append(
       CPPPATH = [
@@ skipping 20 matching lines @@
   # TODO: We need to port tld_cleanup before this will work on other
   # platforms.
   sconscript_files = [
       'tools/tld_cleanup/SConscript',
   ]
 
   SConscript(sconscript_files, exports=['env'])
 
 
 env.Alias('net', ['.', installed_tests])