Add counting the number of CPU's in goma module

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

Index: scripts/slave/recipes/chromium.expected/dynamic_gtest_win.json
diff --git a/scripts/slave/recipes/chromium.expected/dynamic_gtest_win.json b/scripts/slave/recipes/chromium.expected/dynamic_gtest_win.json
index e6dff597bebb159f40da2c1d9541125f66d72d9b..be7737f04e5efd5dc386ae6dafdae261c90f2f0b 100644
--- a/scripts/slave/recipes/chromium.expected/dynamic_gtest_win.json
+++ b/scripts/slave/recipes/chromium.expected/dynamic_gtest_win.json
@@ -174,6 +174,22 @@
     "cmd": [
       "python",
       "-u",
+      "\nimport multiprocessing\nprint min(200, multiprocessing.cpu_count() * 10)\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@print min(200, multiprocessing.cpu_count() * 10)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "[SLAVE_BUILD]\\src\\tools\\swarming_client\\swarming.py",
       "--version"
     ],