NaCl: have browser_tester set-up the sandbox environment

ppapi/native_client/tools/browser_tester/browser_tester.py

Index: ppapi/native_client/tools/browser_tester/browser_tester.py
diff --git a/ppapi/native_client/tools/browser_tester/browser_tester.py b/ppapi/native_client/tools/browser_tester/browser_tester.py
index 061a13817c435a6b03356621519f4db9645d649c..2bf3614f7efef1b2ad0fa55ee80a76fc38e498ca 100755
--- a/ppapi/native_client/tools/browser_tester/browser_tester.py
+++ b/ppapi/native_client/tools/browser_tester/browser_tester.py
@@ -16,6 +16,7 @@ import urllib
 script_dir = os.path.dirname(os.path.abspath(__file__))
 sys.path.append(os.path.join(script_dir, '../../../../third_party/'))
 sys.path.append(os.path.join(script_dir, '../../../../tools/valgrind/'))
+sys.path.append(os.path.join(script_dir, '../../../../testing/'))
 
 import browsertester.browserlauncher
 import browsertester.rpclistener
@@ -24,6 +25,8 @@ import browsertester.server
 import memcheck_analyze
 import tsan_analyze
 
+import test_env
+
 def BuildArgParser():
   usage = 'usage: %prog [options]'
   parser = optparse.OptionParser(usage)
@@ -197,6 +200,9 @@ def RunTestsOnce(url, options):
 
   options.files.append(os.path.join(script_dir, 'browserdata', 'nacltest.js'))
 
+  # Setup the environment with the setuid sandbox path.
+  test_env.enable_sandbox_if_required(os.environ)
+
   # Create server
   host = GetHostName()
   try: