swarming: wholesale switch remaining tests to run on Swarming.

testing/buildbot/chromium.linux.json

Index: testing/buildbot/chromium.linux.json
diff --git a/testing/buildbot/chromium.linux.json b/testing/buildbot/chromium.linux.json
index 4fff6ed2e87cc882b25d646e60d4f1a955744d06..ab395ed9cfd19ddabeb489621af100b1fc45df04 100644
--- a/testing/buildbot/chromium.linux.json
+++ b/testing/buildbot/chromium.linux.json
@@ -840,15 +840,27 @@
         "test": "capture_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_alsa_cma_backend_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_base_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_crash_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_media_unittests"
       },
       {
@@ -859,9 +871,15 @@
           "--no-sandbox",
           "--test-launcher-jobs=1"
         ],
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_shell_browser_test"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "cast_shell_unittests"
       },
       {
@@ -1119,6 +1137,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "dbus_unittests"
       },
       {
@@ -1314,6 +1335,9 @@
         "test": "mus_clipboard_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "mus_gpu_unittests"
       },
       {
@@ -1623,6 +1647,9 @@
         "test": "crypto_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "dbus_unittests"
       },
       {
@@ -1656,6 +1683,9 @@
         "test": "extensions_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "filesystem_service_unittests"
       },
       {
@@ -1768,6 +1798,9 @@
         "test": "mus_clipboard_unittests"
       },
       {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "mus_gpu_unittests"
       },
       {