tools/battor_agent: Adds battor_agent_unittests to waterfall

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 e692963eb89dddd359418fb6546ce68e1cc24fa1..e72045ab1e9b54737f2eff6385d2b7a437478adc 100644
--- a/testing/buildbot/chromium.win.json
+++ b/testing/buildbot/chromium.win.json
@@ -33,6 +33,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "battor_agent_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 10
         },
@@ -467,6 +473,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "battor_agent_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 5
         },
@@ -532,6 +544,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "battor_agent_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 10
         },
@@ -927,6 +945,12 @@
       },
       {
         "swarming": {
+          "can_use_on_swarming_builders": true
+        },
+        "test": "battor_agent_unittests"
+      },
+      {
+        "swarming": {
           "can_use_on_swarming_builders": true,
           "shards": 20
         },
@@ -1303,6 +1327,9 @@
     ],
     "gtest_tests": [
       {
+        "test": "battor_agent_unittests"
+      },
+      {
         "test": "content_browsertests"
       },
       {