[Android] Add a configurable environment for devil/. (RELAND 2)

build/android/devil_chromium.py

Index: build/android/devil_chromium.py
diff --git a/build/android/devil_chromium.py b/build/android/devil_chromium.py
new file mode 100644
index 0000000000000000000000000000000000000000..990b3794692eb7ca47828617205d5dc1899dd0a5
--- /dev/null
+++ b/build/android/devil_chromium.py
@@ -0,0 +1,88 @@
+# 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 os
+
+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': {
+    'armeabi-v7a': 'forwarder_dist',
+    'arm64-v8a': 'forwarder_dist',
+  },
+  'forwarder_host': {
+    'any': 'host_forwarder',
+  },
+  'md5sum_device': {
+    'armeabi-v7a': 'md5sum_dist',
+    'arm64-v8a': 'md5sum_dist',
+  },
+  'md5sum_host': {
+    'any': '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',
+            ...
+          },
+          ...
+        }
+  """
+
+  devil_dynamic_deps = {}
+
+  if output_directory:
+    for dep_name, arch_dict in _DEVIL_BUILD_PRODUCT_DEPS.iteritems():
+      devil_dynamic_deps[dep_name] = {}
+      for arch, name in arch_dict.iteritems():
+        devil_dynamic_deps[dep_name][arch] = os.path.join(
+            output_directory, name)
+
+  devil_dynamic_config = {
+    'config_type': 'BaseConfig',
+    'dependencies': {
+      dep_name: {
+        'file_info': {
+          'android_%s' % arch: {
+            'local_paths': [path]
+          }
+          for arch, path in arch_dict.iteritems()
+        }
+      }
+      for dep_name, arch_dict in devil_dynamic_deps.iteritems()
+    }
+  }
+  if custom_deps:
+    devil_dynamic_config['dependencies'].update(custom_deps)
+
+  devil_env.config.Initialize(
+      configs=[devil_dynamic_config], config_files=[_DEVIL_CONFIG])
+