Allow configuration of info_plist_{,target} in ios_xctest_test.

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/ios/ios_sdk.gni")
 import("//build/config/mac/base_rules.gni")
 import("//build/config/mac/symbols.gni")
 
 # Generates Info.plist files for Mac apps and frameworks.
 #
@@ skipping 1156 matching lines @@
         "{{bundle_plugins_dir}}/$_xctest_output.xctest",
       ]
     }
   }
 
   ios_app_bundle(_host_target) {
     forward_variables_from(invoker, "*", [ "testonly" ])
 
     testonly = true
     output_name = _host_output
-    info_plist = "//build/config/ios/Host-Info.plist"
     configs += [ "//build/config/ios:xctest_config" ]
 
+    if (!defined(invoker.info_plist) && !defined(invoker.info_plist_target)) {
+      info_plist = "//build/config/ios/Host-Info.plist"

[olivierrobin, 2016/07/26 12:51:34]

should we not use info_plist_target if it is defined?

[sdefresne, 2016/07/26 12:52:46]

We already forward the "info_plist" if it is defined with the
"forward_variables_from" call earlier. Here we only set a default value if
neither info_plist nor info_plist_target where defined by the invoker.

+    }
+
     # Xcode needs those two framework installed in the application (and signed)
     # for the XCTest to run, so install them using extra_system_frameworks.
     _ios_platform_library = "$ios_sdk_platform_path/Developer/Library"
     extra_system_frameworks = [
       "$_ios_platform_library/Frameworks/XCTest.framework",
       "$_ios_platform_library/PrivateFrameworks/IDEBundleInjection.framework",
     ]
 
     if (!_is_fat_build || _is_fat_build_main_target) {
       if (!defined(bundle_deps)) {
@@ skipping 14 matching lines @@
       "-rpath",
       "-Xlinker",
       "@loader_path/Frameworks",
     ]
   }
 }
 
 set_defaults("ios_xctest_test") {
   configs = default_executable_configs
 }