[Swarming] Presort tests - slowest first.

test/benchmarks/benchmarks.status

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@@ skipping 10 matching lines @@
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 [
 [ALWAYS, {
   # Too slow in Debug mode.
-  'octane/mandreel': [PASS, ['mode == debug', SKIP]],
+  'octane/mandreel': [PASS, SLOW, ['mode == debug', SKIP]],
   # TODO(turbofan): Too slow in debug mode for now.
   'octane/pdfjs': [PASS, ['mode == debug', SKIP]],
+
+  # Slow tests.
+  'kraken/imaging-gaussian-blur': [PASS, SLOW],
+  'octane/mandreel': [PASS, SLOW],
+  'octane/typescript': [PASS, SLOW],
 }],  # ALWAYS
 ]