Revert "CacheStorage: Enable the sequence feature by default."

This reverts commit 0dbcea96.

Reason for revert: Looking at additional histograms this feature
currently regressions response body read times due to extra thread
hops.  We should wait to launch until we can remove those thread
hops.

Original change's description:
> CacheStorage: Enable the sequence feature by default.
> 
> Bug: 960012
> Change-Id: Ia1c56eedf82376542b2d143692e133a173bd0653
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1845856
> Reviewed-by: Matt Falkenhagen <falken@chromium.org>
> Reviewed-by: Robert Kaplow <rkaplow@chromium.org>
> Commit-Queue: Ben Kelly <wanderview@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#703738}

TBR=falken@chromium.org,rkaplow@chromium.org,wanderview@chromium.org

Change-Id: I0d3fb9c1ed8eea2e07b18082d5f8e92482d9b89c
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: 960012
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1849214Reviewed-by: Ben Kelly <wanderview@chromium.org>
Commit-Queue: Ben Kelly <wanderview@chromium.org>
Cr-Commit-Position: refs/heads/master@{#704160}

content/browser/cache_storage/cache_storage_context_impl.cc

@@ -28,7 +28,7 @@ namespace content {
 namespace {
 
 const base::Feature kCacheStorageSequenceFeature{
-    "CacheStorageSequence", base::FEATURE_ENABLED_BY_DEFAULT};
+    "CacheStorageSequence", base::FEATURE_DISABLED_BY_DEFAULT};
 
 scoped_refptr<base::SequencedTaskRunner> CreateSchedulerTaskRunner() {
   if (!base::FeatureList::IsEnabled(kCacheStorageSequenceFeature))

testing/variations/fieldtrial_testing_config.json

@@ -1460,6 +1460,25 @@
             ]
         }
     ],
+    "CacheStorageSequence": [
+        {
+            "platforms": [
+                "windows",
+                "mac",
+                "chromeos",
+                "linux",
+                "android"
+            ],
+            "experiments": [
+                {
+                    "name": "Enabled1",
+                    "enable_features": [
+                        "CacheStorageSequence"
+                    ]
+                }
+            ]
+        }
+    ],
     "CertDualVerificationTrial": [
         {
             "platforms": [

third_party/blink/web_tests/MSANExpectations

@@ -158,6 +158,7 @@ crbug.com/856601 [ Linux ] virtual/feature-policy-permissions/external/wpt/media
 crbug.com/856601 [ Linux ] virtual/feature-policy-permissions/external/wpt/mediacapture-streams/idlharness.https.window.html [ Pass Timeout ]
 crbug.com/856601 [ Linux ] virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/interfaces-sw.https.html [ Timeout Pass ]
 crbug.com/856601 [ Linux ] virtual/service-worker-servicification/external/wpt/service-workers/service-worker/interfaces-sw.https.html [ Timeout Pass ]
+crbug.com/856601 [ Linux ] virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/interfaces-sw.https.html [ Pass Timeout ]
 crbug.com/856601 [ Linux ] virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/interfaces-sw.https.html [ Pass Failure Timeout ]
 crbug.com/856601 [ Linux ] external/wpt/fetch/api/idl.any.sharedworker.html [ Pass Timeout ]
 crbug.com/856601 [ Linux ] external/wpt/fetch/cors-rfc1918/idlharness.tentative.https.any.serviceworker.html [ Pass Timeout ]

third_party/blink/web_tests/NeverFixTests

@@ -1920,6 +1920,9 @@ virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/fetch-event
 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/fetch-event-is-reload-navigation-manual.https.html [ WontFix ]
 virtual/omt-worker-fetch/external/wpt/xhr/send-authentication-existing-session-manual.htm [ WontFix ]
 virtual/omt-worker-fetch/external/wpt/xhr/send-authentication-prompt-2-manual.htm [ WontFix ]
+virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-event-is-history-backward-navigation-manual.https.html [ WontFix ]
+virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-event-is-history-forward-navigation-manual.https.html [ WontFix ]
+virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-event-is-reload-navigation-manual.https.html [ WontFix ]
 virtual/speech-with-unified-autoplay/external/wpt/speech-api/SpeechRecognition-abort-manual.https.html [ WontFix ]
 virtual/speech-with-unified-autoplay/external/wpt/speech-api/SpeechRecognition-onerror-manual.https.html [ WontFix ]
 virtual/speech-with-unified-autoplay/external/wpt/speech-api/SpeechRecognition-onresult-manual.https.html [ WontFix ]

third_party/blink/web_tests/TestExpectations

@@ -2951,6 +2951,7 @@ crbug.com/828506 [ Win ] virtual/scroll_customization/fast/events/touch/scroll-w
 # Failure messages are unstable so we cannot create baselines.
 crbug.com/832071 external/wpt/service-workers/service-worker/worker-client-id.https.html [ Failure ]
 crbug.com/832071 virtual/navigation-mojo-response/external/wpt/service-workers/service-worker/worker-client-id.https.html [ Failure ]
+crbug.com/832071 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/worker-client-id.https.html [ Failure ]
 crbug.com/832071 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/worker-client-id.https.html [ Failure ]
 
 # failures in external/wpt/css/css-animations/ and web-animations/ from Mozilla tests
@@ -3283,6 +3284,7 @@ crbug.com/699040 external/wpt/svg/text/reftests/text-xml-space-001.svg [ Failure
 crbug.com/626703 external/wpt/service-workers/service-worker/ready.https.html [ Timeout ]
 crbug.com/626703 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/ready.https.html [ Timeout ]
 crbug.com/626703 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/ready.https.html [ Timeout ]
+crbug.com/626703 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/ready.https.html [ Timeout ]
 crbug.com/626703 [ Linux ] external/wpt/css/css-fonts/math-script-level-and-math-style/math-script-level-auto-and-math-style-002.tentative.html [ Failure ]
 crbug.com/626703 [ Mac ] external/wpt/css/css-fonts/math-script-level-and-math-style/math-script-level-auto-and-math-style-002.tentative.html [ Failure ]
 crbug.com/626703 [ Win ] external/wpt/css/css-fonts/math-script-level-and-math-style/math-script-level-auto-and-math-style-002.tentative.html [ Failure ]
@@ -4435,11 +4437,13 @@ crbug.com/927477 external/wpt/import-maps/acquire-import-maps-flag/worker-reques
 crbug.com/691944 external/wpt/service-workers/service-worker/update-after-oneday.https.html [ Skip ]
 crbug.com/691944 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/update-after-oneday.https.html [ Skip ]
 crbug.com/691944 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/update-after-oneday.https.html [ Skip ]
+crbug.com/691944 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/update-after-oneday.https.html [ Skip ]
 
 # These tests (erroneously) see a platform-specific User-Agent header
 crbug.com/595993 external/wpt/service-workers/service-worker/fetch-header-visibility.https.html [ Failure ]
 crbug.com/595993 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/fetch-header-visibility.https.html [ Failure ]
 crbug.com/595993 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/fetch-header-visibility.https.html [ Failure ]
+crbug.com/595993 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-header-visibility.https.html [ Failure ]
 
 crbug.com/619427 [ Mac ] fast/overflow/overflow-height-float-not-removed-crash3.html [ Pass Failure ]
 
@@ -4697,6 +4701,7 @@ crbug.com/745079 external/wpt/geolocation-API/PositionOptions.https.html [ Failu
 
 # Service worker updates need to handle redirect appropriately.
 crbug.com/889798 external/wpt/service-workers/service-worker/import-scripts-redirect.https.html [ Skip ]
+crbug.com/889798 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/import-scripts-redirect.https.html [ Skip ]
 crbug.com/889798 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/import-scripts-redirect.https.html [ Skip ]
 crbug.com/889798 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/import-scripts-redirect.https.html [ Skip ]
 
@@ -5264,6 +5269,8 @@ crbug.com/869773 http/tests/misc/window-dot-stop.html [ Pass Failure ]
 
 crbug.com/873873 external/wpt/service-workers/service-worker/fetch-canvas-tainting-video.https.html [ Timeout Pass ]
 crbug.com/873873 external/wpt/service-workers/service-worker/fetch-canvas-tainting-video-cache.https.html [ Timeout Pass ]
+crbug.com/873873 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-canvas-tainting-video.https.html [ Timeout Pass ]
+crbug.com/873873 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/fetch-canvas-tainting-video-cache.https.html [ Timeout Pass ]
 
 crbug.com/875884 [ Linux ] lifecycle/background-change-lifecycle-count.html [ Pass Failure ]
 crbug.com/875884 [ Win ] lifecycle/background-change-lifecycle-count.html [ Pass Failure ]
@@ -5582,6 +5589,7 @@ crbug.com/931646 [ Win7 ] http/tests/preload/meta-viewport-link-headers-imagesrc
 crbug.com/933880 external/wpt/service-workers/service-worker/request-end-to-end.https.html [ Failure ]
 crbug.com/933880 virtual/omt-service-worker-startup/external/wpt/service-workers/service-worker/request-end-to-end.https.html [ Failure ]
 crbug.com/933880 virtual/omt-worker-fetch/external/wpt/service-workers/service-worker/request-end-to-end.https.html [ Failure ]
+crbug.com/933880 virtual/cache-storage-sequence/external/wpt/service-workers/service-worker/request-end-to-end.https.html [ Failure ]
 crbug.com/933880 http/tests/inspector-protocol/network/interception-take-stream.js [ Failure ]
 crbug.com/933880 http/tests/inspector-protocol/network/xhr-interception-auth-fail.js [ Failure ]
 # This passes in content_shell but not in chrome with network service disabled,

third_party/blink/web_tests/VirtualTestSuites

@@ -1089,6 +1089,11 @@
     "base": "external/wpt/css/css-properties-values-api",
     "args": ["--enable-blink-features=CSSVariables2AtProperty"]
   },
+  {
+    "prefix": "cache-storage-sequence",
+    "base": "external/wpt/service-workers",
+    "args": ["--disable-features=CacheStorageSequence"]
+  },
   {
     "prefix": "conditional-appcache-delay",
     "base": "http/tests/loading/appcache-delay",

third_party/blink/web_tests/virtual/cache-storage-sequence/external/wpt/service-workers/README.txt

+This suite runs the ServiceWorker and CacheStorage tests with the
+CacheStorageSequence feature disabled.  This makes CacheStorage operate on
+the IO thread in the browser process.