Stop to use contextmanager for goma.build_with_goma

scripts/slave/recipes/chromium_codesearch.expected/full_Chromium_Linux_Codesearch.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--spec",
       "cache_dir = '[GIT_CACHE]'\nsolutions = [{'deps_file': '.DEPS.git', 'managed': True, 'name': 'src', 'url': 'https://chromium.googlesource.com/chromium/src.git'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/chrome-devtools-frontend', 'url': 'https://chromium.googlesource.com/chromium/tools/chrome-devtools-frontend'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/gsd_generate_index', 'url': 'https://chromium.googlesource.com/chromium/tools/gsd_generate_index'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/perf', 'url': 'https://chromium.googlesource.com/chromium/tools/perf'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/command_wrapper/bin', 'url': 'https://chromium.googlesource.com/chromium/tools/command_wrapper/bin'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/depot_tools', 'url': 'https://chromium.googlesource.com/chromium/tools/depot_tools'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/chromium-jobqueue', 'url': 'https://chromium.googlesource.com/chromium/tools/chromium-jobqueue'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'tools/chromium-shortener', 'url': 'https://chromium.googlesource.com/chromium/tools/chromium-shortener'}, {'deps_file': '.DEPS.git', 'managed': True, 'name': 'infra', 'url': 'https://chromium.googlesource.com/infra/infra'}]",
       "--patch_root",
       "src",
@@ skipping 182 matching lines @@
     "cmd": [
       "[SLAVE_BUILD]/src/buildtools/linux64/gn",
       "gen",
       "[SLAVE_BUILD]/src/out/Debug",
       "--args=is_clang=true is_component_build=true is_debug=true symbol_level=1 target_cpu=\"x64\" use_goma=true goma_dir=\"[CACHE]/cipd/goma\""
     ],
     "cwd": "[SLAVE_BUILD]/src",
     "name": "generate build files for linux"
   },
   {
-    "cmd": [
-      "python",
-      "-u",
-      "\nimport multiprocessing\nimport sys\n\njob_limit = 200\nif sys.platform.startswith('linux'):\n  # Use 80 for linux not to load goma backend.\n  job_limit = 80\n\ntry:\n  jobs = min(job_limit, multiprocessing.cpu_count() * 10)\nexcept NotImplementedError:\n  jobs = 50\n\nprint jobs\n"
-    ],
-    "name": "calculate the number of recommended jobs",
-    "stdout": "/path/to/tmp/",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@import multiprocessing@@@",
-      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@job_limit = 200@@@",
-      "@@@STEP_LOG_LINE@python.inline@if sys.platform.startswith('linux'):@@@",
-      "@@@STEP_LOG_LINE@python.inline@  # Use 80 for linux not to load goma backend.@@@",
-      "@@@STEP_LOG_LINE@python.inline@  job_limit = 80@@@",
-      "@@@STEP_LOG_LINE@python.inline@@@@",
-      "@@@STEP_LOG_LINE@python.inline@try:@@@",
-      "@@@STEP_LOG_LINE@python.inline@  jobs = min(job_limit, 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": [],
     "name": "preprocess_for_goma"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[CACHE]/cipd/goma/goma_ctl.py",
       "restart"
     ],
@@ skipping 19 matching lines @@
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "preprocess_for_goma.start cloudtail",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
     "cmd": [
+      "python",
+      "-u",
+      "\nimport multiprocessing\nimport sys\n\njob_limit = 200\nif sys.platform.startswith('linux'):\n  # Use 80 for linux not to load goma backend.\n  job_limit = 80\n\ntry:\n  jobs = min(job_limit, multiprocessing.cpu_count() * 10)\nexcept NotImplementedError:\n  jobs = 50\n\nprint jobs\n"
+    ],
+    "name": "calculate the number of recommended jobs",
+    "stdout": "/path/to/tmp/",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import multiprocessing@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@job_limit = 200@@@",
+      "@@@STEP_LOG_LINE@python.inline@if sys.platform.startswith('linux'):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  # Use 80 for linux not to load goma backend.@@@",
+      "@@@STEP_LOG_LINE@python.inline@  job_limit = 80@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@try:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  jobs = min(job_limit, 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": [
       "ninja",
+      "-j",
+      "50",
       "-C",
       "[SLAVE_BUILD]/src/out/Debug",
       "all",
       "-t",
       "compdb",
       "cc",
       "cxx",
       "objc",
-      "objcxx",
-      "-j",
-      "50"
+      "objcxx"
     ],
     "name": "generate compilation database for linux",
     "stdout": "/path/to/tmp/"
   },
   {
     "cmd": [],
     "name": "postprocess_for_goma"
   },
   {
     "cmd": [
@@ skipping 47 matching lines @@
       "-u",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/upload_goma_logs.py",
       "--upload-compiler-proxy-info",
       "--json-status",
       "[CACHE]/cipd/goma/jsonstatus",
       "--ninja-log-outdir",
       "[SLAVE_BUILD]/src/out/Debug",
       "--ninja-log-compiler",
       "goma",
       "--ninja-log-command",
-      "['ninja', '-C', Path('checkout', 'out','Debug'), 'all', '-t', 'compdb', 'cc', 'cxx', 'objc', 'objcxx', '-j', 50]",
+      "['ninja', '-j', 50, '-C', Path('checkout', 'out','Debug'), 'all', '-t', 'compdb', 'cc', 'cxx', 'objc', 'objcxx']",
       "--ninja-log-exit-status",
       "0",
       "--buildbot-buildername",
       "Chromium Linux Codesearch",
       "--buildbot-mastername",
       "chromium.infra.cron",
       "--buildbot-slavename",
       "TestSlavename"
     ],
     "env": {
@@ skipping 77 matching lines @@
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "preprocess_for_goma.start cloudtail (2)",
     "~followup_annotations": [
       "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {
     "cmd": [
       "RECIPE_PACKAGE_REPO[depot_tools]/ninja",
+      "-j",
+      "50",
       "-w",
       "dupbuild=err",
       "-C",
       "[SLAVE_BUILD]/src/out/Debug",
       "-k",
       "0",
-      "-j",
-      "50",
       "all"
     ],
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json"
     },
     "name": "compile with ninja"
   },
   {
     "cmd": [],
     "name": "postprocess_for_goma (2)"
@@ skipping 50 matching lines @@
       "-u",
       "RECIPE_PACKAGE_REPO[build]/scripts/slave/upload_goma_logs.py",
       "--upload-compiler-proxy-info",
       "--json-status",
       "[CACHE]/cipd/goma/jsonstatus",
       "--ninja-log-outdir",
       "[SLAVE_BUILD]/src/out/Debug",
       "--ninja-log-compiler",
       "goma-clang",
       "--ninja-log-command",
-      "['RECIPE_PACKAGE_REPO[depot_tools]/ninja', '-w', 'dupbuild=err', '-C', '[SLAVE_BUILD]/src/out/Debug', '-k', '0', '-j', 50, 'all']",
+      "['RECIPE_PACKAGE_REPO[depot_tools]/ninja', '-j', 50, '-w', 'dupbuild=err', '-C', '[SLAVE_BUILD]/src/out/Debug', '-k', '0', 'all']",
       "--ninja-log-exit-status",
       "0",
       "--buildbot-buildername",
       "Chromium Linux Codesearch",
       "--buildbot-mastername",
       "chromium.infra.cron",
       "--buildbot-slavename",
       "TestSlavename"
     ],
     "env": {
@@ skipping 126 matching lines @@
     "~followup_annotations": [
       "@@@STEP_LINK@gsutil.upload@https://storage.cloud.google.com/chrome-codesearch/prod/chromium_generated_linux_170242.tar.bz2@@@"
     ]
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]