Adjust oom threshold for chrome to 340M

Change-Id: I09f79038221a6a8025a354f9e7d0c52427da03b5
diff --git a/tools/internal_test.py b/tools/internal_test.py
index b98be86..d8e8c62 100755
--- a/tools/internal_test.py
+++ b/tools/internal_test.py
@@ -70,7 +70,7 @@
         'find-xmx-min': 256,
         'find-xmx-max': 450,
         'find-xmx-range': 16,
-        'oom-threshold': 335,
+        'oom-threshold': 340,
     },
     {
         'app': 'youtube',