Convert remoting_unittests to run exclusively on Swarming

testing/buildbot/chromium.win.json

Index: testing/buildbot/chromium.win.json
diff --git a/testing/buildbot/chromium.win.json b/testing/buildbot/chromium.win.json
index 071b43e5c3cc52894c20e83a1955a65000381903..7e778a8dba5aae2321c8cd75ac3f352001bc801e 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -196,6 +196,9 @@
         "test": "printing_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "remoting_unittests"
       },
       {
@@ -494,6 +497,9 @@
         "test": "printing_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "remoting_unittests"
       },
       {
@@ -911,6 +917,9 @@
         "test": "printing_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "remoting_unittests"
       },
       {
@@ -1188,6 +1197,9 @@
         "test": "printing_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "remoting_unittests"
       },
       {
@@ -1624,6 +1636,9 @@
         "test": "printing_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "remoting_unittests"
       },
       {