Add AAR support to Chrome and convert support libraries to using AARs

build/config/android/internal_rules.gni

 # Copyright 2014 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("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
 assert(is_android)
 
 # These identify targets that have .build_config files (except for android_apk,
@@ skipping 39 matching lines @@
   "//third_party/robolectric:android-all-4.3_r2-robolectric-0",
   "//third_party/robolectric:json-20080701",
   "//third_party/robolectric:tagsoup-1.2",
 ]
 
 # Targets that match the whitelist but are not actually java targets.
 _java_target_blacklist = [
   "//chrome:packed_extra_resources",
   "//chrome:packed_resources",
   "//remoting/android:remoting_android_raw_resources",
+  "*:*_unpack_aar",
 ]
 
 # Write the target's .build_config file. This is a json file that contains a
 # dictionary of information about how to build this target (things that
 # require knowledge about this target's dependencies and cannot be calculated
 # at gn-time). There is a special syntax to add a value in that dictionary to
 # an action/action_foreachs args:
 #   --python-arg=@FileArg($rebased_build_config_path:key0:key1)
 # At runtime, such an arg will be replaced by the value in the build_config.
 # See build/android/gyp/write_build_config.py and
@@ skipping 2465 matching lines @@
       outputs = [
         depfile,
         invoker.out_manifest,
       ]
       inputs = [
         invoker.main_manifest,
       ]
     }
   }
 }