Revert "Remove references to crash_service, which is no longer needed."

scripts/slave/recipe_modules/chromium/api.py

Index: scripts/slave/recipe_modules/chromium/api.py
diff --git a/scripts/slave/recipe_modules/chromium/api.py b/scripts/slave/recipe_modules/chromium/api.py
index a668ba5606ee0c78ad7d98688121847e8a43f73d..6afe82f6668479d2ad8ff88de6e421584088625f 100644
--- a/scripts/slave/recipe_modules/chromium/api.py
+++ b/scripts/slave/recipe_modules/chromium/api.py
@@ -610,6 +610,14 @@ class ChromiumApi(recipe_api.RecipeApi):
        self.package_repo_resource('scripts', 'slave', 'cleanup_temp.py')],
       infra_step=True)
 
+  def crash_handler(self):
+    self.m.python(
+        'start_crash_service',
+        self.package_repo_resource(
+            'scripts', 'slave', 'chromium', 'run_crash_handler.py'),
+        ['--target', self.c.build_config_fs],
+        infra_step=True)
+
   def process_dumps(self, **kwargs):
     # Dumps are especially useful when other steps (e.g. tests) are failing.
     try: