[GN] New template convert_plist to convert a plist file to another format.

build/config/ios/rules.gni

 # Copyright 2015 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/mac/base_rules.gni")
 
 # Generates Info.plist files for Mac apps and frameworks.
 #
 # Arguments
 #
@@ skipping 21 matching lines @@
       "IOS_PLATFORM_NAME=$ios_sdk_name",
       "IOS_PLATFORM_VERSION=$ios_sdk_version",
       "IOS_SDK_BUILD=$ios_sdk_build",
       "IOS_SDK_NAME=$ios_sdk_name$ios_sdk_version",
       "IOS_SUPPORTED_PLATFORM=$ios_sdk_platform",
     ]
     plist_templates = [
       "//build/config/ios/BuildInfo.plist",
       invoker.info_plist,
     ]
-    forward_variables_from(invoker, [ "executable_name" ])
+    forward_variables_from(invoker,
+                           [
+                             "executable_name",
+                             "visibility",
+                           ])
   }
 }
 
 # TODO(crbug.com/297668): refactor this template to extract common behaviour
 # between OS X and iOS bundle generation, then create a generic "app" template
 # that forward to "executable" on all platform except iOS/OS X.
 
 # Template to build an application bundle for iOS.
 #
 # This should be used instead of "executable" built-in target type on iOS.
@@ skipping 370 matching lines @@
                              [
                                "testonly",
                                "visibility",
                              ])
       public_deps = [
         ":$_framework_target+link",
       ]
     }
   }
 }