[Swarming] Presort tests - slowest first.

Swarming won't support an incremental data file. By just
sorting the lowest hanging fruits to the beginning we
already get a big bang for the buck (>80% of the improvement
we get otherwise).

This will require semi-regular manual updates of the
slowest tests.

BUG=chromium:535160
LOG=n

Review URL: https://codereview.chromium.org/1385443002

Cr-Commit-Position: refs/heads/master@{#31061}

test/benchmarks/benchmarks.status

@@ -28,8 +28,13 @@
 [
 [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
 ]

test/cctest/cctest.status

@@ -126,6 +126,7 @@
   'test-api/Threading2': [PASS, ['mode == debug', SLOW]],
   'test-api/Threading3': [PASS, ['mode == debug', SLOW]],
   'test-api/Threading4': [PASS, ['mode == debug', SLOW]],
+  'test-debug/CallFunctionInDebugger': [PASS, ['mode == debug', SLOW]],
   'test-strings/StringOOM*': [PASS, ['mode == debug', SKIP]],
 
   # TODO(machenbach, mvstanton): Flaky in debug on all platforms.
@@ -198,6 +199,10 @@
 
 ##############################################################################
 ['no_snap == True', {
+  # Slow tests.
+  'test-api/ExternalWrap': [PASS, SLOW],
+  'test-api/FastReturnValues*': [PASS, SLOW],
+  'test-decls/CrossScriptReferences_Simple2': [PASS, SLOW],
 }],  # 'no_snap == True'
 
 ##############################################################################

test/mjsunit/mjsunit.status

@@ -197,7 +197,7 @@
   # Skip long running tests that time out in debug mode.
   'generated-transition-stub': [PASS, ['mode == debug', SKIP]],
   'migrations': [SKIP],
-  'array-functions-prototype-misc': [PASS, ['mode == debug', SKIP]],
+  'array-functions-prototype-misc': [PASS, SLOW, ['mode == debug', SKIP]],
 
   ##############################################################################
   # This test sets the umask on a per-process basis and hence cannot be
@@ -251,6 +251,17 @@
   # BUG(chromium:508074). Remove this once the issue is fixed.
   'harmony/arrow-rest-params': [PASS, NO_VARIANTS],
   'harmony/rest-params': [PASS, ['no_snap == True', NO_VARIANTS]],
+
+  # Slow tests.
+  'copy-on-write-assert': [PASS, SLOW],
+  'debug-scopes': [PASS, SLOW],
+  'es7/object-observe': [PASS, ['mode == debug', SLOW]],
+  'numops-fuzz-part*': [PASS, ['mode == debug', SLOW]],
+  'readonly': [PASS, SLOW],
+  'regress/regress-1200351': [PASS, ['mode == debug', SLOW]],
+  'regress/regress-crbug-474297': [PASS, ['mode == debug', SLOW]],
+  'strong/implicit-conversions': [PASS, SLOW],
+  'strong/load-element-mutate-backing-store': [PASS, SLOW],
 }],  # ALWAYS
 
 ['novfp3 == True', {
@@ -321,6 +332,12 @@
 
   # BUG(v8:4381)
   'for-in-opt': [PASS, FAIL],
+
+  # Slow tests.
+  'array-constructor': [PASS, SLOW],
+  'json': [PASS, SLOW],
+  'regress/regress-446389': [PASS, SLOW],
+  'regress/regress-inline-getter-near-stack-limit': [PASS, SLOW],
 }],  # 'gc_stress == True'
 
 ##############################################################################

test/simdjs/simdjs.status

@@ -19,6 +19,10 @@
 
   # TODO(bbudge): Drop this when simd implementation is faster.
   'benchmarks/memcpy': SKIP,
+
+  # Slow tests.
+  'benchmarks/kernel-template': [PASS, SLOW],
+  'benchmarks/memset': [PASS, SLOW],
 }],
 
 ######################################################################

tools/testrunner/local/execution.py

@@ -72,6 +72,8 @@ class Runner(object):
     if not context.no_sorting:
       for t in self.tests:
         t.duration = self.perfdata.FetchPerfData(t) or 1.0
+      slow_key = lambda t: statusfile.IsSlow(t.outcomes)
+      self.tests.sort(key=slow_key, reverse=True)
       self.tests.sort(key=lambda t: t.duration, reverse=True)
     self._CommonInit(suites, progress_indicator, context)