[android] Stop using isolate.py for data dependency management. (RELAND)

build/android/pylib/utils/device_dependencies.py

Index: build/android/pylib/utils/device_dependencies.py
diff --git a/build/android/pylib/utils/device_dependencies.py b/build/android/pylib/utils/device_dependencies.py
new file mode 100644
index 0000000000000000000000000000000000000000..dc9b01f7dd59cd1f88a54f0a0552005663d14afe
--- /dev/null
+++ b/build/android/pylib/utils/device_dependencies.py
@@ -0,0 +1,104 @@
+# Copyright 2016 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.
+
+import os
+import re
+
+from pylib import constants
+
+
+_BLACKLIST = [
+  re.compile(r'.*OWNERS'),  # Should never be included.
+  re.compile(r'.*\.crx'),  # Chrome extension zip files.
+  re.compile(r'.*\.so'),  # Libraries packed into .apk.
+  re.compile(r'.*Mojo.*manifest\.json'),  # Some source_set()s pull these in.
+  re.compile(r'.*\.py'),  # Some test_support targets include python deps.
+
+  # Some test_support targets include python deps.
+  re.compile(r'.*\.mojom\.js'),
+
+  # Chrome external extensions config file.
+  re.compile(r'.*external_extensions\.json'),
+
+  # Exists just to test the compile, not to be run.
+  re.compile(r'.*jni_generator_tests'),
+
+  # v8's blobs get packaged into APKs.
+  re.compile(r'.*natives_blob.*\.bin'),
+  re.compile(r'.*snapshot_blob.*\.bin'),
+]
+
+
+def DevicePathComponentsFor(host_path, output_directory):
+  """Returns the device path components for a given host path.
+
+  This returns the device path as a list of joinable path components,
+  with None as the first element to indicate that the path should be
+  rooted at $EXTERNAL_STORAGE.
+
+  e.g., given
+
+    '$CHROMIUM_SRC/foo/bar/baz.txt'
+
+  this would return
+
+    [None, 'foo', 'bar', 'baz.txt']
+
+  This handles a couple classes of paths differently than it otherwise would:
+    - All .pak files get mapped to top-level paks/
+    - Anything in the output directory gets mapped relative to the output
+      directory rather than the source directory.
+
+  e.g. given
+
+    '$CHROMIUM_SRC/out/Release/icu_fake_dir/icudtl.dat'
+
+  this would return
+
+    [None, 'icu_fake_dir', 'icudtl.dat']
+
+  Args:
+    host_path: The absolute path to the host file.
+  Returns:
+    A list of device path components.
+  """
+  if host_path.startswith(output_directory):
+    if os.path.splitext(host_path)[1] == '.pak':
+      return [None, 'paks', os.path.basename(host_path)]
+    rel_host_path = os.path.relpath(host_path, output_directory)
+  else:
+    rel_host_path = os.path.relpath(host_path, constants.DIR_SOURCE_ROOT)
+
+  device_path_components = [None]
+  p = rel_host_path
+  while p:
+    p, d = os.path.split(p)
+    if d:
+      device_path_components.insert(1, d)
+  return device_path_components
+
+
+def GetDataDependencies(runtime_deps_path):
+  """Returns a list of device data dependencies.
+
+  Args:
+    runtime_deps_path: A str path to the .runtime_deps file.
+  Returns:
+    A list of (host_path, device_path) tuples.
+  """
+  if not runtime_deps_path:
+    return []
+
+  with open(runtime_deps_path, 'r') as runtime_deps_file:
+    rel_host_files = [l.strip() for l in runtime_deps_file if l]
+
+  output_directory = constants.GetOutDirectory()
+  abs_host_files = [
+      os.path.abspath(os.path.join(output_directory, r))
+      for r in rel_host_files]
+  filtered_abs_host_files = [
+      host_file for host_file in abs_host_files
+      if not any(blacklist_re.match(host_file) for blacklist_re in _BLACKLIST)]
+  return [(f, DevicePathComponentsFor(f, output_directory))
+          for f in filtered_abs_host_files]