Extract media/capture/capture_unittests from media_unittests

testing/buildbot/chromium.chromiumos.json

Index: testing/buildbot/chromium.chromiumos.json
diff --git a/testing/buildbot/chromium.chromiumos.json b/testing/buildbot/chromium.chromiumos.json
index 4aaf391efbe887f42ceb7064a2e16be08cbcc101..15d3165949d6a52ed18a4a608b6a92faa9f5dd9e 100644
--- a/testing/buildbot/chromium.chromiumos.json
+++ b/testing/buildbot/chromium.chromiumos.json
@@ -96,6 +96,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "capture_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "chromeos_unittests"
       },
       {
@@ -406,6 +412,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "capture_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "chrome_app_unittests"
       },
       {
@@ -717,6 +729,12 @@
         "swarming": {
           "can_use_on_swarming_builders": true
         },
+        "test": "capture_unittests"
+      },
+      {
+        "swarming": {
+          "can_use_on_swarming_builders": true
+        },
         "test": "chrome_app_unittests"
       },
       {