Update from https://crrev.com/303153

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 3d656b3d91fef386d2e39e454e120894aab01f53..c1bdf11a1be8baf6a9a81a5a7ae3907ce6fa4c72 100644
--- a/testing/buildbot/chromium.mac.json
+++ b/testing/buildbot/chromium.mac.json
@@ -1,5 +1,5 @@
 {
-  "Mac10.6 Tests (1)": {
+  "Mac10.6 Tests": {
     "gtest_tests": [
       "accessibility_unittests",
       "app_list_unittests",
@@ -97,7 +97,7 @@
       }
     ]
   },
-  "Mac10.7 Tests (1)": {
+  "Mac10.8 Tests": {
     "gtest_tests": [
       "accessibility_unittests",
       "app_list_unittests",
@@ -195,7 +195,7 @@
       }
     ]
   },
-  "Mac 10.6 Tests (dbg)(1)": {
+  "Mac10.9 Tests": {
     "gtest_tests": [
       "accessibility_unittests",
       "app_list_unittests",
@@ -280,20 +280,12 @@
     ],
     "scripts": [
       {
-        "name": "telemetry_unittests",
-        "script": "telemetry_unittests.py"
-      },
-      {
-        "name": "telemetry_perf_unittests",
-        "script": "telemetry_perf_unittests.py"
-      },
-      {
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }
     ]
   },
-  "Mac 10.7 Tests (dbg)(1)": {
+  "Mac10.9 Tests (dbg)": {
     "gtest_tests": [
       "accessibility_unittests",
       "app_list_unittests",
@@ -379,14 +371,6 @@
     ],
     "scripts": [
       {
-        "name": "telemetry_unittests",
-        "script": "telemetry_unittests.py"
-      },
-      {
-        "name": "telemetry_perf_unittests",
-        "script": "telemetry_perf_unittests.py"
-      },
-      {
         "name": "nacl_integration",
         "script": "nacl_integration.py"
       }