Add support for iOS application bundle to GN.

testing/test.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.
 
 # ==============================================================================
 # TEST SETUP
 # ==============================================================================
 
 # Define a test as an executable (or apk on Android) with the "testonly" flag
 # set.
@@ skipping 105 matching lines @@
     group("${target_name}_incremental") {
       testonly = true
       datadeps = [
         ":$incremental_test_runner_script_name",
       ]
       deps = [
         ":${apk_name}_incremental",
       ]
     }
   } else if (is_ios) {
-    if (is_ios) {
-      import("//build/config/ios/rules.gni")
-    }
+    import("//build/config/ios/ios_sdk.gni")
+    import("//build/config/ios/rules.gni")
 
-    ios_app(target_name) {
-      # TODO(GYP): Make this configurable and only provide a default
-      # that can be overridden.
-      info_plist = "//testing/gtest_ios/unittest-Info.plist"
-      app_name = target_name
-      entitlements_path = "//testing/gtest_ios"
-      code_signing_identity = ""
-      testonly = true
-
-      # See above call.
-      set_sources_assignment_filter([])
-
+    ios_test_app(target_name) {
       forward_variables_from(invoker,
                              [
+                               # Arguments specific to ios_test_app target.
+                               "app_name",
+                               "code_signing_identity",
+                               "entitlements_path",
+                               "extra_substitutions",
+                               "info_plist",
+                               "test_data_files",
+
+                               # Arguments supported by executable target.
                                "all_dependent_configs",
                                "allow_circular_includes_from",
+                               "asmflags",
+                               "bundle_data",
                                "cflags",
                                "cflags_c",
                                "cflags_cc",
-                               "cflags_objc",
                                "cflags_objcc",
                                "check_includes",
                                "configs",
                                "data",
                                "data_deps",
                                "defines",
+                               "deps",
                                "include_dirs",
+                               "inputs",
                                "ldflags",
+                               "lib_dirs",
                                "libs",
                                "output_extension",
                                "output_name",
+                               "precompiled_header",
+                               "precompiled_source",
                                "public",
                                "public_configs",
                                "public_deps",
                                "sources",
                                "visibility",
                              ])
+      testonly = true
 
-      if (defined(invoker.deps)) {
-        deps = invoker.deps
-      } else {
+      _app_name = target_name
+      if (defined(invoker.app_name)) {
+        _app_name = invoker.app_name
+      }
+      _bundle_test_name = _app_name
+      if (defined(invoker.bundle_test_name)) {
+        _bundle_test_name = invoker.bundle_test_name
+      }
+
+      if (!defined(invoker.extra_substitutions)) {
+        extra_substitutions = []
+      }
+      extra_substitutions += [ "BUNDLE_ID_TEST_NAME=$_bundle_test_name" ]
+
+      if (!defined(invoker.bundle_data)) {
+        bundle_data = []
+      }
+      bundle_data += [ "//testing/gtest_ios/Default.png" ]
+
+      if (!defined(invoker.info_plist)) {
+        info_plist = "//testing/gtest_ios/unittest-Info.plist"
+      }
+
+      if (!defined(invoker.entitlements_path)) {
+        entitlements_path = ""
+      }
+
+      if (!defined(invoker.code_signing_identity)) {
+        code_signing_identity = ios_code_signing_identity
+      }
+
+      if (!defined(invoker.deps)) {

[brettw, 2016/01/22 19:00:12]

I'd make this:
  if (!defined(deps)) {
now.

[sdefresne, 2016/01/25 14:01:22]

Done.

         deps = []
       }
       deps += [
         # All shared libraries must have the sanitizer deps to properly link in
         # asan mode (this target will be empty in other cases).
         "//build/config/sanitizers:deps",
       ]
     }
   } else {
     executable(target_name) {
       forward_variables_from(invoker, "*")
 
       testonly = true
 
       if (!defined(invoker.deps)) {
         deps = []
       }
       deps += [
         # All shared libraries must have the sanitizer deps to properly link in
         # asan mode (this target will be empty in other cases).
         "//build/config/sanitizers:deps",
 
         # Give tests the default manifest on Windows (a no-op elsewhere).
         "//build/win:default_exe_manifest",
       ]
     }
   }
 }