Fix uncaught exception on ios_dbg_simulator_ninja bots.

scripts/slave/recipe_modules/ios/api.py

Index: scripts/slave/recipe_modules/ios/api.py
diff --git a/scripts/slave/recipe_modules/ios/api.py b/scripts/slave/recipe_modules/ios/api.py
index 272d727c0abd14ca17cfbfd0ee8f375bf2606de2..b1e480347085f5f1b6a0b7875b9bdba9a898772d 100644
--- a/scripts/slave/recipe_modules/ios/api.py
+++ b/scripts/slave/recipe_modules/ios/api.py
@@ -333,9 +333,15 @@ class iOSApi(recipe_api.RecipeApi):
     use_goma = (self.compiler == 'ninja' and
                 ('use_goma=1' in gyp_defines or 'use_goma=true' in gn_args))
     if use_goma:
-      self.m.chromium.apply_config('ninja')
-      self.m.chromium.apply_config('default_compiler')
-      self.m.chromium.apply_config('goma')
+      if 'without patch' not in suffix:
+        # TODO(crbug.com/603641):
+        # Configs aren't deapplied, so we only want to apply these
+        # configs once. Really, we should refactor this so that we're
+        # not applying configs at all in build(), but rather do it
+        # in an earlier step.
+        self.m.chromium.apply_config('ninja')
+        self.m.chromium.apply_config('default_compiler')
+        self.m.chromium.apply_config('goma')

[smut, 2016/04/15 01:43:12]

Could apply these in read_build_config.

[Dirk Pranke, 2016/04/15 01:46:20]

I thought about that but I would have to make sure the self.compiler,
gyp_defines,
and gn_args were set correctly at that point, and it looked like that was not a
4-line change, 
which is why I made this change instead and left in the TODO.

Next chance I get to get some breathing room, I'll come back and clean this up.

       self.m.chromium.compile(targets=compile_targets,
                               target=build_sub_path,
                               cwd=cwd)