Valgrind: Do not use the sandbox for layout tests.

tools/valgrind/valgrind_test.py

Index: tools/valgrind/valgrind_test.py
===================================================================
--- tools/valgrind/valgrind_test.py	(revision 202727)
+++ tools/valgrind/valgrind_test.py	(working copy)
@@ -390,6 +390,12 @@
 
     # The Valgrind command is constructed.
 
+    # Valgrind doesn't play nice with the Chrome sandbox.  Empty this env var
+    # set by runtest.py to disable the sandbox.
+    if os.environ.get("CHROME_DEVEL_SANDBOX", None):
+      logging.info("Removing CHROME_DEVEL_SANDBOX fron environment")
+      os.environ["CHROME_DEVEL_SANDBOX"] = ''
+
     # Handle --indirect_webkit_layout separately.
     if self._options.indirect_webkit_layout:
       # Need to create the wrapper before modifying |proc|.
@@ -399,12 +405,6 @@
       proc.append(wrapper)
       return proc
 
-    # Valgrind doesn't play nice with the Chrome sandbox.  Empty this env var
-    # set by runtest.py to disable the sandbox.
-    if os.environ.get("CHROME_DEVEL_SANDBOX", None):
-      logging.info("Removing CHROME_DEVEL_SANDBOX fron environment")
-      os.environ["CHROME_DEVEL_SANDBOX"] = ''
-
     if self._options.indirect:
       wrapper = self.CreateBrowserWrapper(proc)
       os.environ["BROWSER_WRAPPER"] = wrapper