Android Chromoting: Add hooks for the official account-switcher

remoting/remoting_android.gypi

 # 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.
 
 {
   'conditions': [
     ['OS=="android"', {
+      'variables': {
+        # These hooks allow official builds to modify the remoting_apk target:
+        # Official build of remoting_apk pulls in extra code.
+        'remoting_apk_extra_dependencies%': [],
+        # A different ProGuard config for Google Play Services is needed since the one used by
+        # Chromium and Google Chrome strips out code that we need.
+        'remoting_android_google_play_services_javalib%': '../third_party/android_tools/android_tools.gyp:google_play_services_javalib',
+        # Allows official builds to define the ApplicationContext class differently, and provide
+        # different implementations of parts of the product.
+        'remoting_apk_java_in_dir%': 'android/apk',
+      },
       'targets': [
         {
           'target_name': 'remoting_jni_headers',
           'type': 'none',
           'sources': [
             'android/java/src/org/chromium/chromoting/jni/Client.java',
             'android/java/src/org/chromium/chromoting/jni/JniInterface.java',
           ],
           'variables': {
             'jni_gen_package': 'remoting',
@@ skipping 85 matching lines @@
               '<!@pymod_do_main(grit_info <@(grit_defines) --outputs "<(SHARED_INTERMEDIATE_DIR)" resources/remoting_strings.grd)',
             ],
           },
           'dependencies': [
             'remoting_android_resources',
             '../base/base.gyp:base_java',
             '../ui/android/ui_android.gyp:ui_java',
             '../third_party/android_tools/android_tools.gyp:android_support_v7_appcompat_javalib',
             '../third_party/android_tools/android_tools.gyp:android_support_v7_mediarouter_javalib',
             '../third_party/android_tools/android_tools.gyp:android_support_v13_javalib',
-            '../third_party/android_tools/android_tools.gyp:google_play_services_javalib',
             '../third_party/cardboard-java/cardboard.gyp:cardboard_jar',
+            '<(remoting_android_google_play_services_javalib)',
           ],
           'includes': [ '../build/java.gypi' ],
           'conditions' : [
             ['enable_cast==1', {
               'variables': {
                 'additional_src_dirs': [
                   'android/cast',
                 ],
               },
             }],
           ],
         },
         {
           'target_name': 'remoting_apk',
           'type': 'none',
           'dependencies': [
             'remoting_apk_manifest',
             'remoting_client_jni',
             'remoting_android_client_java',
+            '<@(remoting_apk_extra_dependencies)',
           ],
           'variables': {
             'apk_name': '<!(python <(version_py_path) -f <(branding_path) -t "@APK_FILE_NAME@")',
             'android_app_version_name': '<(version_full)',
             'android_app_version_code': '<!(python tools/android_version.py <(android_app_version_name))',
             'android_manifest_path': '<(SHARED_INTERMEDIATE_DIR)/remoting/android/AndroidManifest.xml',
-            'java_in_dir': 'android/apk',
+            'java_in_dir': '<(remoting_apk_java_in_dir)',
             'native_lib_target': 'libremoting_client_jni',
           },
           'includes': [ '../build/java_apk.gypi' ],
         },  # end of target 'remoting_apk'
         {
           'target_name': 'remoting_test_apk',
           'type': 'none',
           'dependencies': [
             '../base/base.gyp:base_java_test_support',
             'remoting_android_client_java',
@@ skipping 18 matching lines @@
           ],
           'variables': {
             'test_suite_name': 'remoting_unittests',
           },
           'includes': [ '../build/apk_test.gypi' ],
         },
       ],
     }],  # 'OS=="android"
   ],  # end of 'conditions'
 }