[Devil] Replace generated Devil config with jinja template.

build/android/devil_chromium.py

 # Copyright 2015 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.
 
 """Configures devil for use in chromium."""
 
+import logging
 import os
 import sys
 
 from pylib.constants import host_paths
 
 if host_paths.DEVIL_PATH not in sys.path:
   sys.path.append(host_paths.DEVIL_PATH)
 
 from devil import devil_env
 
-_DEVIL_CONFIG = os.path.abspath(
-    os.path.join(os.path.dirname(__file__), 'devil_chromium.json'))
-
-_DEVIL_BUILD_PRODUCT_DEPS = {
-  'forwarder_device': [
-    {
-      'platform': 'android',
-      'arch': 'armeabi-v7a',
-      'name': 'forwarder_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'arm64-v8a',
-      'name': 'forwarder_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'mips',
-      'name': 'forwarder_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'mips64',
-      'name': 'forwarder_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'x86',
-      'name': 'forwarder_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'x86_64',
-      'name': 'forwarder_dist',
-    },
-  ],
-  'forwarder_host': [
-    {
-      'platform': 'linux2',
-      'arch': 'x86_64',
-      'name': 'host_forwarder',
-    },
-  ],
-  'md5sum_device': [
-    {
-      'platform': 'android',
-      'arch': 'armeabi-v7a',
-      'name': 'md5sum_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'arm64-v8a',
-      'name': 'md5sum_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'mips',
-      'name': 'md5sum_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'mips64',
-      'name': 'md5sum_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'x86',
-      'name': 'md5sum_dist',
-    },
-    {
-      'platform': 'android',
-      'arch': 'x86_64',
-      'name': 'md5sum_dist',
-    },
-  ],
-  'md5sum_host': [
-    {
-      'platform': 'linux2',
-      'arch': 'x86_64',
-      'name': 'md5sum_bin_host',
-    },
-  ],
-}
-
 
 def Initialize(output_directory=None, custom_deps=None):
   """Initializes devil with chromium's binaries and third-party libraries.
 
   This includes:
     - Libraries:
       - the android SDK ("android_sdk")
       - pymock ("pymock")
     - Build products:
       - host & device forwarder binaries
           ("forwarder_device" and "forwarder_host")
       - host & device md5sum binaries ("md5sum_device" and "md5sum_host")
 
   Args:
     output_directory: An optional path to the output directory. If not set,
       no built dependencies are configured.
     custom_deps: An optional dictionary specifying custom dependencies.
       This should be of the form:
 
         {
           'dependency_name': {
             'platform': 'path',
             ...
           },
           ...
         }
   """
+  config_files = None
+  if output_directory:
+    generated_config_file = os.path.abspath(os.path.join(
+        output_directory, 'gen', 'devil_chromium.json'))
+    if os.path.exists(generated_config_file):
+      config_files = [generated_config_file]
+    else:
+      logging.warning('%s not found in output directory.',
+                      generated_config_file)
 
-  devil_dynamic_config = {
+  custom_config = {
     'config_type': 'BaseConfig',
     'dependencies': {},
   }
-  if output_directory:
-    output_directory = os.path.abspath(output_directory)
-    devil_dynamic_config['dependencies'] = {
-      dep_name: {
-        'file_info': {
-          '%s_%s' % (dep_config['platform'], dep_config['arch']): {
-            'local_paths': [
-              os.path.join(output_directory, dep_config['name']),
-            ],
-          }
-          for dep_config in dep_configs
-        }
-      }
-      for dep_name, dep_configs in _DEVIL_BUILD_PRODUCT_DEPS.iteritems()
-    }
   if custom_deps:
-    devil_dynamic_config['dependencies'].update(custom_deps)
+    custom_config['dependencies'].update(custom_deps)
 
   devil_env.config.Initialize(
-      configs=[devil_dynamic_config], config_files=[_DEVIL_CONFIG])
+      configs=[custom_config], config_files=config_files)