Fix typo in comment: target_out_dir/bin -> root_build_dir/bin

build/config/android/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("//base/android/linker/config.gni")
 import("//build/config/android/config.gni")
 import("//build/config/android/internal_rules.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/toolchain/toolchain.gni")
 import("//third_party/android_platform/config.gni")
@@ skipping 888 matching lines @@
 #     will be added to java_files and be included in this library.
 #   srcjars: List of srcjars to be included in this library, together with the
 #     ones obtained from srcjar_deps.
 #   bypass_platform_checks: Disables checks about cross-platform (Java/Android)
 #     dependencies for this target. This will allow depending on an
 #     android_library target, for example.
 #   chromium_code: If true, extra analysis warning/errors will be enabled.
 #   enable_errorprone: If true, enables the errorprone compiler.
 #   enable_incremental_javac: Overrides the global enable_incremental_javac.
 #   main_class: When specified, a wrapper script is created within
-#     $target_out_dir/bin to launch the binary with the given class as the
+#     $root_build_dir/bin to launch the binary with the given class as the
 #     entrypoint.
 #   wrapper_script_args: List of additional arguments for the wrapper script.
 #
 #   data_deps, testonly
 #
 # Example
 #   java_binary("foo") {
 #     java_files = [ "org/chromium/foo/FooMain.java" ]
 #     deps = [ ":bar_java" ]
 #     main_class = "org.chromium.foo.FooMain"
@@ skipping 1497 matching lines @@
       "--target",
       rebase_path(invoker.target, root_build_dir),
       "--output-directory",
       rebase_path(root_out_dir, root_build_dir),
     ]
     if (defined(invoker.flag_name)) {
       args += [ "--flag-name=${invoker.flag_name}" ]
     }
   }
 }