GN(android): Add scripts & runtime logic for installing _managed apks

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")
 
 assert(is_android)
 
 rebased_android_sdk = rebase_path(android_sdk, root_build_dir)
 rebased_android_sdk_root = rebase_path(android_sdk_root, root_build_dir)
@@ skipping 620 matching lines @@
     }
   }
 }
 
 # Packages resources, assets, dex, and native libraries into an apk. Signs and
 # zipaligns the apk.
 template("create_apk") {
   set_sources_assignment_filter([])
   forward_variables_from(invoker, [ "testonly" ])
 
+  _template_name = target_name
+  assert(_template_name == _template_name)  # Mark as used.
+
   _android_manifest = invoker.android_manifest
   _base_path = invoker.base_path
   _final_apk_path = invoker.apk_path
   _managed_final_apk_path_helper =
       process_file_template([ _final_apk_path ],
-                            "{{source_dir}}/{{source_name_part}}_managed.apk")
-  _managed_final_apk_path = _managed_final_apk_path_helper[0]
+                            "{{source_dir}}/{{source_name_part}}_managed")
+  _managed_final_apk_path_no_ext = _managed_final_apk_path_helper[0]
+  _managed_final_apk_path = "${_managed_final_apk_path_no_ext}.apk"
 
   if (defined(invoker.resources_zip)) {
     _resources_zip = invoker.resources_zip
   }
   if (defined(invoker.dex_path)) {
     _dex_path = invoker.dex_path
   }
   _load_library_from_apk = invoker.load_library_from_apk
 
   _package_deps = []
@@ skipping 542 matching lines @@
   if (defined(invoker.srcjar_deps)) {
     _srcjar_deps = invoker.srcjar_deps
   }
 
   _srcjars = []
   if (defined(invoker.srcjars)) {
     _srcjars = invoker.srcjars
   }
 
   _java_files = []
-  if (defined(invoker.java_files)) {
-    _java_files = invoker.java_files
-  } else if (defined(invoker.DEPRECATED_java_in_dir)) {
+  if (defined(invoker.DEPRECATED_java_in_dir)) {
     _src_dir = invoker.DEPRECATED_java_in_dir + "/src"
     _src_dir_exists = exec_script("//build/dir_exists.py",
                                   [ rebase_path(_src_dir, root_build_dir) ],
                                   "string")
     assert(_src_dir_exists == "False",
            "In GN, java_in_dir should be the fully specified java directory " +
                "(i.e. including the trailing \"/src\")")
 
-    _java_files_build_rel = exec_script(
-            "//build/android/gyp/find.py",
-            [
-              "--pattern",
-              "*.java",
-              rebase_path(invoker.DEPRECATED_java_in_dir, root_build_dir),
-            ],
-            "list lines")
+    _java_files_build_rel =
+        exec_script("//build/android/gyp/find.py",
+                    [
+                      "--pattern",
+                      "*.java",
+                      rebase_path(invoker.DEPRECATED_java_in_dir,
+                                  root_build_dir),
+                    ],
+                    "list lines")
     _java_files = rebase_path(_java_files_build_rel, ".", root_build_dir)
   }
+  if (defined(invoker.java_files)) {
+    _java_files += invoker.java_files
+  }
   assert(_java_files != [] || _srcjar_deps != [] || _srcjars != [])
 
   _compile_java_target = "${_template_name}__compile_java"
   _final_deps += [ ":$_compile_java_target" ]
   compile_java(_compile_java_target) {
     jar_path = _jar_path
     build_config = _build_config
     java_files = _java_files
     srcjar_deps = _srcjar_deps
     srcjars = _srcjars
@@ skipping 395 matching lines @@
     ]
     args = [
       "--depfile",
       rebase_path(depfile, root_build_dir),
       "--script-output-path",
       rebase_path(generated_script, root_build_dir),
     ]
     args += test_runner_args
   }
 }