Reland of Moves mojo_js_integration_tests into blink.

testing/buildbot/client.v8.chromium.json

 {
   "Linux - Future": {
     "gtest_tests": [
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "app_shell_unittests"
       },
       {
@@ skipping 216 matching lines @@
         "test": "jingle_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "media_blink_unittests"
       },
       {
         "swarming": {
-          "can_use_on_swarming_builders": true
-        },
-        "test": "mojo_js_integration_tests"
-      },
-      {
-        "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "mojo_js_unittests"
       },
       {
         "swarming": {
           "can_use_on_swarming_builders": true
         },
         "test": "nacl_loader_unittests"
       },
@@ skipping 417 matching lines @@
         "name": "telemetry_unittests",
         "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 4
         }
       }
     ],
     "scripts": []
   }
 }