Add next_version_mini_installer target.

chrome/installer/mini_installer/BUILD.gn

 # 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/features.gni")
 import("//build/config/ui.gni")
 import("//build_overrides/v8.gni")
 import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 import("//ui/base/ui_features.gni")
@@ skipping 186 matching lines @@
   libs = [ "setupapi.lib" ]
 
   deps = [
     ":archive",
     ":lib",
     ":version",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
   ]
 }
+
+# next_version_mini_installer.exe can't be generated in an x86 Debug component
+# build because it requires too much memory.
+if (!(is_component_build && is_debug && target_cpu == "x86")) {
+  action("next_version_mini_installer") {
+    script = "generate_next_version_mini_installer.py"
+    testonly = true
+    inputs = [
+      "$root_out_dir/alternate_version_generator.exe",
+      "$root_out_dir/mini_installer.exe",
+    ]
+    outputs = [
+      "$root_out_dir/$target_name.exe",
+    ]
+    args = [
+      "--out",
+      "$target_name.exe",
+    ]
+    deps = [
+      ":mini_installer",
+      "//chrome/installer/test:alternate_version_generator",
+    ]
+  }
+}