[android_webview] Extract common SystemWebview parameters to .gypi file.

third_party/android_webview_glue/android_webview_glue.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.
 {
   'targets': [
     {
       'target_name': 'system_webview_apk',
-      'type': 'none',
-      'dependencies': [
-        'libwebviewchromium',
-        'android_webview_java',
-        'android_webview_pak',
-      ],
       'variables': {
-        'android_sdk_jar': '../third_party/android_platform/webview/frameworks.jar',
         'apk_name': 'SystemWebView',
-        'app_manifest_version_code': '999999',
-        'java_in_dir': 'src/chromium',
-        'java_in_dir_suffix': '/java',
-        'native_lib_target': 'libwebviewchromium',
-        'never_lint': 1,
-        'resource_dir': 'src/chromium/res',
-        'R_package': 'com.android.webview.chromium',
-        'R_package_relpath': 'com/android/webview/chromium',
-        'extensions_to_not_compress': 'pak',
-        'asset_location': '<(PRODUCT_DIR)/android_webview_assets',
-        # TODO: crbug.com/405035 Find a better solution for WebView .pak files.
-        'additional_input_paths': [
-          '<(PRODUCT_DIR)/android_webview_assets/webviewchromium.pak',
-          '<(PRODUCT_DIR)/android_webview_assets/en-US.pak',
-        ],
-        'conditions': [
-          ['icu_use_data_file_flag==1', {
-            'additional_input_paths': [
-              '<(PRODUCT_DIR)/icudtl.dat',
-            ],
-          }],
-        ],
       },
+      'includes': [ 'android_webview_glue_common.gypi' ],
       'copies': [
         {
           'destination': '<(PRODUCT_DIR)/android_webview_assets',
           'files': [],
           'conditions': [
             ['icu_use_data_file_flag==1', {
               'files': [
                 '<(PRODUCT_DIR)/icudtl.dat',
               ],
             }],
           ],
         },
-      ],'includes': [ '../../build/java_apk.gypi' ],
+      ],
     },
   ],
 }