Add GN rules for forwarder2 and chromium_commands

tools/android/forwarder2/BUILD.gn

+# 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.
+
+group("forwarder2") {
+  deps = [
+    ":device_forwarder($default_toolchain)",
+    ":host_forwarder($host_toolchain)",
+  ]
+
+# TODO(GYP)
+# For the component build, ensure dependent shared libraries are stripped
+# and put alongside forwarder to simplify pushing to the device.
+#      'variables': {

[jamesr, 2014/10/24 00:21:44]

i think this is basically create_native_executable_dist(), but am not sure
exactly what the magic is or how to test it.

[cjhopman, 2014/10/24 01:23:34]

Yeah, that's correct.

The magic should (mostly) just work. In a non-component build, the _dist
directory should contain just the forwarder executable. In a component build (if
that actually builds), the directory should contain the executable and any
shared libraries that it depends on.

+#         'output_dir': '<(PRODUCT_DIR)/forwarder_dist/',
+#         'native_binary': '<(PRODUCT_DIR)/device_forwarder',
+#      },
+}
+
+if (current_toolchain == default_toolchain) {
+  # GYP version: tools/android/forwarder2/forwarder.gyp:device_forwarder
+  executable("device_forwarder") {
+    sources = [
+      "command.cc",
+      "command.h",
+      "common.cc",
+      "common.h",
+      "daemon.cc",
+      "daemon.h",
+      "device_controller.cc",
+      "device_controller.h",
+      "device_forwarder_main.cc",
+      "device_listener.cc",
+      "device_listener.h",
+      "forwarder.cc",
+      "forwarder.h",
+      "forwarders_manager.cc",
+      "forwarders_manager.h",
+      "pipe_notifier.cc",
+      "pipe_notifier.h",
+      "socket.cc",
+      "socket.h",
+    ]
+
+    deps = [
+      "//base",
+      "//tools/android/common",
+    ]
+    datadeps = [
+      "//build/android/pylib/device/commands:chromium_commands",
+    ]
+
+    include_dirs = [ "../../" ]
+
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ "//build/config/compiler:no_chromium_code" ]
+  }
+} else {
+  # GYP version: tools/android/forwarder2/forwarder.gyp:host_forwarder
+  executable("host_forwarder") {
+    sources = [
+      "command.cc",
+      "common.cc",
+      "daemon.cc",
+      "forwarder.cc",
+      "forwarders_manager.cc",
+      "host_controller.cc",
+      "host_forwarder_main.cc",
+      "pipe_notifier.cc",
+      "socket.cc",
+    ]
+
+    deps = [
+      "//base",
+      "//tools/android/common",
+    ]
+
+    include_dirs = [ "../../.." ]
+  
+    configs -= [ "//build/config/compiler:chromium_code" ]
+    configs += [ "//build/config/compiler:no_chromium_code" ]
+}
+}