Use runtime_deps to tell create_installer_archive what dlls to copy.

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 63 matching lines @@
   release_file = "chrome.release"
 
   inputs = [
     "$root_out_dir/chrome.exe",
     "$root_out_dir/chrome.dll",
     "$root_out_dir/locales/en-US.pak",
     "$root_out_dir/setup.exe",
     release_file,
   ]
 
+  # The runtime deps are used to tell create_installer_archive what component
+  # build DLLs need to be packaged.
+  _installer_runtime_deps = "$root_gen_dir/mini_installer.runtime_deps"
+
   outputs = [
     # See also chrome.packed.7z conditionally added below.
     "$root_out_dir/chrome.7z",
     "$root_out_dir/setup.ex_",
     packed_files_rc_file,
   ]
   args = [
     "--build_dir",
     rebase_path(root_out_dir, root_build_dir),
     "--staging_dir",
     rebase_path(root_gen_dir, root_build_dir),
     "--input_file",
     rebase_path(release_file, root_build_dir),
     "--resource_file_path",
     rebase_path(packed_files_rc_file, root_build_dir),
     "--target_arch=$current_cpu",
     "--distribution=_google_chrome",
+    "--runtime_deps",
+    rebase_path(_installer_runtime_deps, root_build_dir),
 
     # Optional arguments to generate diff installer.
     #'--last_chrome_installer=C:/Temp/base',
     #'--setup_exe_format=DIFF',
     #'--diff_algorithm=COURGETTE',
 
     # Optional argument for verbose archiving output.
     #'--verbose',
   ]
 
@@ skipping 33 matching lines @@
   }
 
   if (v8_use_external_startup_data) {
     inputs += [
       "$root_out_dir/natives_blob.bin",
       "$root_out_dir/snapshot_blob.bin",
     ]
     deps += [ "//v8" ]
   }
 
+  write_runtime_deps = _installer_runtime_deps
+
   depfile = "$target_gen_dir/archive.d"
   args += [
     "--depfile",
     rebase_path(depfile, root_build_dir),
   ]
 }
 
 executable("mini_installer") {
   sources = [
     "mini_installer.cc",
@@ skipping 49 matching lines @@
     args = [
       "--out",
       "$target_name.exe",
     ]
     deps = [
       ":mini_installer",
       "//chrome/installer/test:alternate_version_generator",
     ]
   }
 }