Revert "build: remove diagnose_goma step to stop leaks"

scripts/slave/recipe_modules/chromium_tests/steps.py

Index: scripts/slave/recipe_modules/chromium_tests/steps.py
diff --git a/scripts/slave/recipe_modules/chromium_tests/steps.py b/scripts/slave/recipe_modules/chromium_tests/steps.py
index ad0b3ee6ea8945f84f16b5117590492a507de7d4..f3f1ca195a59552e7f96dbf7574c42d8acc8e1f1 100644
--- a/scripts/slave/recipe_modules/chromium_tests/steps.py
+++ b/scripts/slave/recipe_modules/chromium_tests/steps.py
@@ -1834,6 +1834,23 @@ class WebViewCTSTest(Test):
     api.chromium_android.run_webview_cts()
 
 
+class DiagnoseGomaTest(Test):
+  name = 'diagnose_goma'
+
+  @property
+  def name(self):
+    return 'diagnose_goma'
+
+  @staticmethod
+  def compile_targets(_):
+    return []
+
+  def run(self, api, suffix, test_filter=None):
+    diagnose_goma_log_py = api.path['build'].join('goma',
+                                                  'diagnose_goma_log.py')
+    api.python('diagnose_goma', diagnose_goma_log_py, [])
+
+
 class IncrementalCoverageTest(Test):
   name = 'incremental_coverage'