[Swarming] Isolate perf tests.

test/perf.isolate

Index: test/perf.isolate
diff --git a/test/perf.isolate b/test/perf.isolate
new file mode 100644
index 0000000000000000000000000000000000000000..77f66cc67cc5d3398e92bdfde19c09448f40b12f
--- /dev/null
+++ b/test/perf.isolate
@@ -0,0 +1,23 @@
+# Copyright 2016 the V8 project authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+{
+  'variables': {
+    'command': [
+      '../tools/run_perf.py',
+    ],
+    'files': [
+      '../tools/run_perf.py',
+      # This is often used to trigger performance bots. We include it in the
+      # isolate to not get these builds deduped.
+      '../tools/whitespace.txt',
+      'js-perf-test/',
+      'memory/',
+      'simdjs/',
+    ],
+  },
+  'includes': [
+    'cctest/cctest_exe.isolate',
+    '../src/d8.isolate',
+  ],
+}