[browser][MT] move wasm MT CI legs to extra-platforms

eng/pipelines/extra-platforms/runtime-extra-platforms-wasm.yml

@@ -74,6 +74,22 @@ jobs:
       scenarios:
         - WasmTestOnChrome
 
+  # Library tests with full threading
+  - template: /eng/pipelines/common/templates/wasm-library-tests.yml
+    parameters:
+      platforms:
+        - browser_wasm
+        #- browser_wasm_win
+      nameSuffix: _Threading
+      extraBuildArgs: /p:WasmEnableThreads=true /p:AotHostArchitecture=x64 /p:AotHostOS=$(_hostedOS)
+      extraHelixArguments: /p:WasmEnableThreads=true
+      isExtraPlatformsBuild: ${{ parameters.isExtraPlatformsBuild }}
+      isWasmOnlyBuild: ${{ parameters.isWasmOnlyBuild }}
+      alwaysRun: ${{ parameters.isWasmOnlyBuild }}
+      shouldRunSmokeOnly: onLibrariesAndIllinkChanges
+      scenarios:
+        - WasmTestOnChrome
+
   # EAT Library tests - only run on linux
   - template: /eng/pipelines/common/templates/wasm-library-aot-tests.yml
     parameters:
@@ -162,7 +178,6 @@ jobs:
         - browser_wasm_win
       nameSuffix: MultiThreaded
       extraBuildArgs: /p:WasmEnableThreads=true /p:AotHostArchitecture=x64 /p:AotHostOS=$(_hostedOS)
-      condition: ne(variables['wasmMultiThreadedBuildOnlyNeededOnDefaultPipeline'], true)
       publishArtifactsForWorkload: true
       publishWBT: false
 

eng/pipelines/runtime.yml

@@ -822,20 +822,6 @@ extends:
           scenarios:
             - WasmTestOnChrome
 
-      # Library tests with full threading
-      - template: /eng/pipelines/common/templates/wasm-library-tests.yml
-        parameters:
-          platforms:
-            - browser_wasm
-            #- browser_wasm_win
-          nameSuffix: _Threading
-          extraBuildArgs: /p:WasmEnableThreads=true /p:AotHostArchitecture=x64 /p:AotHostOS=$(_hostedOS)
-          extraHelixArguments: /p:WasmEnableThreads=true
-          alwaysRun: ${{ variables.isRollingBuild }}
-          shouldRunSmokeOnly: onLibrariesAndIllinkChanges
-          scenarios:
-            - WasmTestOnChrome
-
       # EAT Library tests - only run on linux
       - template: /eng/pipelines/common/templates/wasm-library-aot-tests.yml
         parameters:
@@ -871,17 +857,6 @@ extends:
           publishArtifactsForWorkload: true
           publishWBT: true
 
-      - template: /eng/pipelines/common/templates/wasm-build-only.yml
-        parameters:
-          platforms:
-            - browser_wasm
-            - browser_wasm_win
-          condition: or(eq(variables.isRollingBuild, true), eq(variables.wasmSingleThreadedBuildOnlyNeededOnDefaultPipeline, true))
-          nameSuffix: MultiThreaded
-          extraBuildArgs: /p:WasmEnableThreads=true /p:AotHostArchitecture=x64 /p:AotHostOS=$(_hostedOS)
-          publishArtifactsForWorkload: true
-          publishWBT: false
-
       # Browser Wasm.Build.Tests
       - template: /eng/pipelines/common/templates/browser-wasm-build-tests.yml
         parameters:

src/mono/wasm/features.md

@@ -23,7 +23,7 @@ Some of these properties require a unique build of the runtime, which means that
 
 ### Multi-threading
 
-Multi-threading support is enabled by `<WasmEnableThreads>true</WasmEnableThreads>`, and is currently disabled by default. It requires a unique build of the runtime.
+Multi-threading experiment is enabled by `<WasmEnableThreads>true</WasmEnableThreads>`, and is currently disabled by default. It requires a unique build of the runtime.
 
 Your HTTPS server and/or proxy must be configured to send HTTP headers similar to `Cross-Origin-Embedder-Policy:require-corp` and `Cross-Origin-Opener-Policy:same-origin` in order to enable multi-threading support in end-user web browsers for security reasons.