Add runhooks step to AOSP bot to pick up essential build dependencies (like gn).

scripts/slave/recipe_modules/android/api.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """Common steps for recipes that sync/build Android sources."""
 
 from slave import recipe_api
 
 class AOSPApi(recipe_api.RecipeApi):
   def __init__(self, **kwargs):
@@ skipping 33 matching lines @@
 
     spec = self.m.gclient.make_config('chromium_bare')
     deps_blacklist = self.m.step_history.last_step().json.output['blacklist']
     spec.solutions[0].custom_deps = deps_blacklist
     spec.solutions[0].revision = svn_revision
     spec.target_os = ['android']
     self.m.gclient.spec_alias = 'trimmed'
     yield self.m.gclient.checkout(spec)
     del self.m.gclient.spec_alias
 
+    yield self.m.gclient.runhooks(env={'GYP_CHROMIUM_NO_ACTION': 1})
+
   def lastchange_steps(self):
     lastchange_command = self.m.path.checkout('build', 'util', 'lastchange.py')
     yield (
       self.m.step('Chromium LASTCHANGE', [
         lastchange_command,
         '-o', self.m.path.checkout('build', 'util', 'LASTCHANGE'),
         '-s', self.m.path.checkout]),
       self.m.step('Blink LASTCHANGE', [
         lastchange_command,
         '-o', self.m.path.checkout('build', 'util', 'LASTCHANGE.blink'),
@@ skipping 90 matching lines @@
                       envsetup +
                       compile_script +
                       targets +
                       ['--build-dir', self.m.path.slave_build] +
                       ['--src-dir', src_dir] +
                       ['--build-tool', build_tool] +
                       ['--verbose'] +
                       compiler_option,
                       cwd=self.m.path.slave_build)