Revert of Disable telemetry tests for Mac 10.9.

testing/buildbot/chromium.mac.json

Index: testing/buildbot/chromium.mac.json
diff --git a/testing/buildbot/chromium.mac.json b/testing/buildbot/chromium.mac.json
index c1bdf11a1be8baf6a9a81a5a7ae3907ce6fa4c72..f6725b0ac4badb092555cbdf435a012ddc7587fd 100644
--- a/testing/buildbot/chromium.mac.json
+++ b/testing/buildbot/chromium.mac.json
@@ -280,6 +280,14 @@
     ],
     "scripts": [
       {
+        "name": "telemetry_unittests",
+        "script": "telemetry_unittests.py"
+      },
+      {
+        "name": "telemetry_perf_unittests",
+        "script": "telemetry_perf_unittests.py"
+      },
+      {
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }
@@ -371,6 +379,14 @@
     ],
     "scripts": [
       {
+        "name": "telemetry_unittests",
+        "script": "telemetry_unittests.py"
+      },
+      {
+        "name": "telemetry_perf_unittests",
+        "script": "telemetry_perf_unittests.py"
+      },
+      {
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }