Remove --disable-mojo-service-worker

third_party/WebKit/LayoutTests/VirtualTestSuites

 [
   {
     "prefix": "color_space",
     "base": "fast/canvas/color-space",
     "args": ["--enable-color-correct-rendering",
              "--enable-true-color-rendering"]
   },
   {
     "prefix": "gpu",
     "base": "fast/canvas",
@@ skipping 298 matching lines @@
     "prefix": "enable_wasm",
     "base": "http/tests/wasm",
     "args": ["--enable-features=WebAssembly"]
   },
   {
     "prefix": "enable_asmjs",
     "base": "http/tests/asmjs",
     "args": ["--enable-features=AsmJsToWebAssembly"]
   },
   {
-    "prefix": "disable-mojo-service-worker",
-    "base": "http/tests/serviceworker",
-    "args": ["--disable-mojo-service-worker"]
-  },
-  {
     "prefix": "service-worker-navigation-preload",
     "base": "http/tests/serviceworker",
     "args": ["--enable-features=ServiceWorkerNavigationPreload"]
   },
   {
     "prefix": "layout_ng",
     "base": "fast/block/basic",
     "args": ["--enable-blink-features=LayoutNG"]
   },
   {
@@ skipping 20 matching lines @@
     "prefix": "mojo-localstorage",
     "base": "imported/wpt/webstorage",
     "args": ["--mojo-local-storage"]
   },
   {
     "prefix": "mojo-localstorage",
     "base": "storage/domstorage/localstorage",
     "args": ["--mojo-local-storage"]
   }
 ]