Preliminary support for Windows manifests in the GN build.

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 185 matching lines @@
       if (defined(invoker.data_deps)) {
         data_deps = invoker.data_deps
       }
       if (defined(invoker.datadeps)) {
         datadeps = invoker.datadeps
       }
       if (defined(invoker.defines)) {
         defines = invoker.defines
       }
 
-      # All shared libraries must have the sanitizer deps to properly link in
-      # asan mode (this target will be empty in other cases).
       if (defined(invoker.deps)) {
-        deps = invoker.deps + [ "//build/config/sanitizers:deps" ]
+        deps = invoker.deps
       } else {
-        deps = [
-          "//build/config/sanitizers: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",
+      ]
+
       if (defined(invoker.direct_dependent_configs)) {
         direct_dependent_configs = invoker.direct_dependent_configs
       }
       if (defined(invoker.forward_dependent_configs_from)) {
         forward_dependent_configs_from = invoker.forward_dependent_configs_from
       }
       if (defined(invoker.include_dirs)) {
         include_dirs = invoker.include_dirs
       }
       if (defined(invoker.ldflags)) {
@@ skipping 22 matching lines @@
       }
       if (defined(invoker.sources)) {
         sources = invoker.sources
       }
       if (defined(invoker.visibility)) {
         visibility = invoker.visibility
       }
     }
   }
 }