Fix GYP-based closure try bots while they continue getting ported to GN

scripts/slave/recipes/closure_compilation.py

Index: scripts/slave/recipes/closure_compilation.py
diff --git a/scripts/slave/recipes/closure_compilation.py b/scripts/slave/recipes/closure_compilation.py
index c3451d0c4d6cbe7bdfb4e5b066f4752defb8dfa5..f353e4f1c2bcc54ad84d05607f030dd60c5beeb8 100644
--- a/scripts/slave/recipes/closure_compilation.py
+++ b/scripts/slave/recipes/closure_compilation.py
@@ -40,23 +40,11 @@ def RunSteps(api):
   )
 
   api.step(
-      'generate_gyp_files',
-      [api.path['checkout'].join('build', 'gyp_chromium'),
-       api.path['checkout'].join('third_party', 'closure_compiler',
-                                 'compiled_resources.gyp')],
+      'run_compiler',
+       [api.path['checkout'].join('third_party', 'closure_compiler',
+                                 'run_compiler')]
   )
 
-  api.chromium.compile()
-
-  api.step(
-      'generate_v2_gyp_files',
-      [api.path['checkout'].join('build', 'gyp_chromium'),
-       api.path['checkout'].join('third_party', 'closure_compiler',
-                                 'compiled_resources2.gyp')],
-  )
-
-  api.chromium.compile(name='compile_v2')
-
 
 def GenTests(api):
   for mastername, config in MASTERS.iteritems():