Add counting the number of CPU's in goma module

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

Index: scripts/slave/recipes/chromium.expected/dynamic_gtest_android.json
diff --git a/scripts/slave/recipes/chromium.expected/dynamic_gtest_android.json b/scripts/slave/recipes/chromium.expected/dynamic_gtest_android.json
index a0ebcb8d4034731b5419069ec4c85e653f9d395e..91ec4bf69670fd29d931df27cc0c776fd996b99e 100644
--- a/scripts/slave/recipes/chromium.expected/dynamic_gtest_android.json
+++ b/scripts/slave/recipes/chromium.expected/dynamic_gtest_android.json
@@ -168,6 +168,28 @@
     "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",
       "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
       "runhooks"
     ],