Explicitly enable SignedExchanged* features for web tests

This CL (temporarily) explicitly enable SignedExchanged* for web
tests. Two tests under external/wpt/signed-exchange/subresource are
rebaselined. virtual/sxg-subresource is removed.

This is to sepearte the change of web test expectations from
crrev.com/c/2375886 which will enable the feature for web tests by
adjusting the application order of blink feature status and chromium
feature status.

Bug: 1121839
Change-Id: I240be44a74a72604dcecc4aad34c0ca70a4e76e0
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2378738Reviewed-by: Tsuyoshi Horo <horo@chromium.org>
Commit-Queue: Xianzhu Wang <wangxianzhu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#802444}

content/child/runtime_features.cc

@@ -605,6 +605,8 @@ void SetCustomizedRuntimeFeaturesFromCombinedArgs(
   // these features.
   if (enable_experimental_web_platform_features) {
     WebRuntimeFeatures::EnableNetInfoDownlinkMax(true);
+    WebRuntimeFeatures::EnableSignedExchangePrefetchCacheForNavigations(true);
+    WebRuntimeFeatures::EnableSignedExchangeSubresourcePrefetch(true);
   }
 
   if (enable_blink_test_features) {

third_party/blink/web_tests/FlagExpectations/enable-blink-features=ForceSynchronousHTMLParsing

@@ -38,8 +38,8 @@ crbug.com/901056 scrollingcoordinator/donot-compute-non-fast-scrollable-region-f
 ### virtual/composite-after-paint/scrollingcoordinator/
 crbug.com/901056 virtual/composite-after-paint/scrollingcoordinator/donot-compute-non-fast-scrollable-region-for-hidden-frames.html [ Timeout ]
 
-### virtual/sxg-subresource/external/wpt/signed-exchange/subresource/
-crbug.com/901056 virtual/sxg-subresource/external/wpt/signed-exchange/subresource/sxg-subresource.tentative.html [ Timeout ]
+### external/wpt/signed-exchange/subresource/
+crbug.com/901056 external/wpt/signed-exchange/subresource/sxg-subresource.tentative.html [ Timeout ]
 
 ### http/tests/devtools/sources/debugger/
 crbug.com/1063051 http/tests/devtools/sources/debugger/debug-inlined-scripts-fragment-id.js [ Timeout ]

third_party/blink/web_tests/NeverFixTests

@@ -2148,6 +2148,10 @@ virtual/wbn-from-network/external/wpt/web-bundle/wbn-from-network/* [ Pass ]
 crbug.com/1082020 http/tests/loading/wbn/origin-trial/* [ Skip ]
 virtual/subresource-web-bundles-disabled/http/tests/loading/wbn/origin-trial/* [ Pass ]
 
+# This test requires sxg-subresource-disabled.
+http/tests/loading/sxg/sxg-subresource-origin-trial.https.html [ Skip ]
+virtual/sxg-subresource-disabled/http/tests/loading/sxg/sxg-subresource-origin-trial.https.html [ Pass ]
+
 # No good way to automate this test yet
 external/wpt/native-file-system/showSaveFilePicker-manual.https.html [ Skip ]
 

third_party/blink/web_tests/VirtualTestSuites

@@ -377,9 +377,9 @@
     "args": ["--autoplay-policy=document-user-activation-required"]
   },
   {
-    "prefix": "sxg-subresource",
-    "bases": ["external/wpt/signed-exchange"],
-    "args": ["--enable-features=SignedExchangeSubresourcePrefetch"]
+    "prefix": "sxg-subresource-disabled",
+    "bases": ["http/tests/loading/sxg/sxg-subresource-origin-trial.https.html"],
+    "args": ["--disable-blink-features=SignedExchangeSubresourcePrefetch"]
   },
   {
     "prefix": "wbn-from-network",

third_party/blink/web_tests/external/wpt/signed-exchange/subresource/sxg-subresource-header-integrity-mismatch.tentative-expected.txt

-This is a testharness.js-based test.
-FAIL Subresource signed exchange prefetch. assert_equals: expected "from server" but got "sxg-subresource-script.js should not be prefetched"
-Harness: the test ran to completion.
-

third_party/blink/web_tests/external/wpt/signed-exchange/subresource/sxg-subresource.tentative-expected.txt

-This is a testharness.js-based test.
-FAIL Subresource signed exchange prefetch. assert_equals: expected "from signed exchange" but got "sxg-subresource-script.js should not be prefetched"
-Harness: the test ran to completion.
-

third_party/blink/web_tests/virtual/sxg-subresource-disabled/README.md

+With --disable-features=SignedExchangeSubresourcePrefetch

third_party/blink/web_tests/virtual/sxg-subresource/external/wpt/signed-exchange/README.txt

-This directory is for testing the SignedExchangeSubresourcePrefetch feature.

third_party/blink/web_tests/virtual/sxg-subresource/external/wpt/signed-exchange/subresource/sxg-subresource-header-integrity-mismatch.tentative-expected.txt

-This is a testharness.js-based test.
-PASS Subresource signed exchange prefetch.
-Harness: the test ran to completion.
-

third_party/blink/web_tests/virtual/sxg-subresource/external/wpt/signed-exchange/subresource/sxg-subresource.tentative-expected.txt

-This is a testharness.js-based test.
-PASS Subresource signed exchange prefetch.
-Harness: the test ran to completion.
-