[Do Not Submit] Rough draft enabling junit tests for android studio

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.
 
 # Do not add any imports to non-//build directories here.
 # Some projects (e.g. V8) do not have non-build directories DEPS'ed in.
 import("//build_overrides/build.gni")
 import("//build/config/android/config.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 
@@ skipping 353 matching lines @@
       #   deps = [ ":foo(//baz)" ]
       #   assert(current_toolchain == default_toolchain)
       # }
       _msg = [
         "Tried to build an Android target in a non-default toolchain.",
         "target: " + get_label_info(":$target_name", "label_with_toolchain"),
         "default_toolchain: $default_toolchain",
       ]
       args += [ "--fail=$_msg" ]
     }
+    if (defined(invoker.not_chromium_code) && invoker.not_chromium_code) {
+      args += [ "--not-chromium-code" ]
+    }
   }
 }
 
 template("copy_ex") {
   set_sources_assignment_filter([])
   action(target_name) {
     forward_variables_from(invoker,
                            [
                              "data",
                              "deps",
@@ skipping 1884 matching lines @@
         forward_variables_from(invoker,
                                [
                                  "input_jars_paths",
                                  "proguard_configs",
                                ])
         if (defined(invoker.is_java_binary) && invoker.is_java_binary) {
           type = "java_binary"
         } else {
           type = "java_library"
         }
+        not_chromium_code = false
+
+        # If it's not chromium code then we don't support modifying it in
+        # android studio.
+        if (defined(invoker.chromium_code) && !invoker.chromium_code) {
+          not_chromium_code = true
+        }
         if (defined(invoker.deps)) {
           possible_config_deps = invoker.deps
         }
         supports_android = _supports_android
         requires_android = _requires_android
         bypass_platform_checks = defined(invoker.bypass_platform_checks) &&
                                  invoker.bypass_platform_checks
 
         build_config = _build_config
         jar_path = _jar_path
@@ skipping 415 matching lines @@
         rebase_path(root_build_dir, root_build_dir),
         "--packed-libraries-dir",
         rebase_path(_packed_libraries_dir, root_build_dir),
         "--libraries=${invoker.libraries_filearg}",
         "--filelistjson",
         rebase_path(invoker.file_list_json, root_build_dir),
       ]
     }
   }
 }