Stop to use contextmanager for goma.build_with_goma

scripts/slave/recipes/chromium_codesearch.py

Index: scripts/slave/recipes/chromium_codesearch.py
diff --git a/scripts/slave/recipes/chromium_codesearch.py b/scripts/slave/recipes/chromium_codesearch.py
index df08a706ec8a915cb8e035fdcf2671783a1d93d1..287b4f705025c8292feade6c6672c246d21aa469 100644
--- a/scripts/slave/recipes/chromium_codesearch.py
+++ b/scripts/slave/recipes/chromium_codesearch.py
@@ -110,15 +110,14 @@ def GenerateCompilationDatabase(api, debug_path, targets, platform):
   # Add the parameters for creating the compilation database.
   command += ['-t', 'compdb', 'cc', 'cxx', 'objc', 'objcxx']
 
-  command += ['-j', api.goma.recommended_goma_jobs]
-
   with api.goma.build_with_goma(
       ninja_log_outdir=debug_path,
-      ninja_log_command=command,
-      ninja_log_compiler='goma'):
+      ninja_command=command,
+      ninja_log_compiler='goma') as (env_update, ninja_command):
     return api.step('generate compilation database for %s' % platform,
-                    command,
-                    stdout=api.raw_io.output())
+                    ninja_command,
+                    stdout=api.raw_io.output(),
+                    env=env_update)
 
 
 def RunSteps(api):