Add counting the number of CPU's in goma module

scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json

Index: scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json
diff --git a/scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json b/scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json
index d34686dfb4b100e540af7e49a721eb848763a966..5816a4288a7b12c71fe473548b488367d980a0d2 100644
--- a/scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json
+++ b/scripts/slave/recipes/chromium.expected/full_chromium_Linux_x64.json
@@ -191,6 +191,28 @@
     "cmd": [
       "python",
       "-u",
+      "\nimport multiprocessing\n\ntry:\n  jobs = min(200, multiprocessing.cpu_count() * 10)\nexcept NotImplementedError:\n  jobs = 50\n\nprint jobs\n"
+    ],
+    "name": "ensure_goma.get the number of cpus",
+    "stdout": "/path/to/tmp/",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import multiprocessing@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@try:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  jobs = min(200, multiprocessing.cpu_count() * 10)@@@",
+      "@@@STEP_LOG_LINE@python.inline@except NotImplementedError:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  jobs = 50@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@print jobs@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "\nimport os, sys\nfrom common import chromium_utils # Error? See https://crbug.com/584783.\n\n\nif os.path.exists(sys.argv[1]):\n  chromium_utils.RemoveDirectory(sys.argv[1])\n",
       "[BUILDER_CACHE]/linux_clobber/src/out/Release"
     ],