[dart2wasm] Allow running dart2wasm tests on safari on Mac

This doesn't add a builder yet, but allows running tests locally on a Mac.

Change-Id: I1e1d1158d7d443df5896a759a669db47b1eb420f
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/426461
Reviewed-by: Slava Egorov <[email protected]>
Commit-Queue: Martin Kustermann <[email protected]>

Author: mkustermann

pkg/smith/lib/configuration.dart

@@ -876,6 +876,7 @@ class Compiler extends NamedEnum {
           Runtime.d8,
           Runtime.chrome,
           Runtime.firefox,
+          Runtime.safari,
         ];
       case Compiler.dart2analyzer:
         return const [Runtime.none];

tools/bots/test_matrix.json

@@ -414,7 +414,7 @@
         "timeout": 240
       }
     },
-    "dart2wasm-asserts-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox)": {
+    "dart2wasm-asserts-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox|safari)": {
       "options": {
         "host-asserts": true,
         "enable-asserts": true,
@@ -424,7 +424,7 @@
         "timeout": 60
       }
     },
-    "dart2wasm-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox)": {
+    "dart2wasm-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox|safari)": {
       "options": {
         "host-asserts": true,
         "dart2wasm-options": [
@@ -434,7 +434,7 @@
         "timeout": 60
       }
     },
-    "dart2wasm-(linux|mac|win)-optimized-(d8|jsshell|jsc|chrome|firefox)": {
+    "dart2wasm-(linux|mac|win)-optimized-(d8|jsshell|jsc|chrome|firefox|safari)": {
       "options": {
         "dart2wasm-options": [
           "-O1",
@@ -445,7 +445,7 @@
         "timeout": 120
       }
     },
-    "dart2wasm-asserts-minified-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox)": {
+    "dart2wasm-asserts-minified-(linux|mac|win)-(d8|jsshell|jsc|chrome|firefox|safari)": {
       "options": {
         "dart2wasm-options": [
           "--minify"
@@ -456,7 +456,7 @@
         "timeout": 120
       }
     },
-    "dart2wasm-(linux|mac|win)-jscm-(d8|jsshell|jsc|chrome|firefox)": {
+    "dart2wasm-(linux|mac|win)-jscm-(d8|jsshell|jsc|chrome|firefox|safari)": {
       "options": {
         "dart2wasm-options": [
           "-O0",