Fix missing library for crasphad_handler in Mac component build

headless/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/chrome_build.gni")
 import("//build/util/process_version.gni")
 import("//headless/headless.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 import("//printing/features/features.gni")
 import("//testing/test.gni")
@@ skipping 471 matching lines @@
     deps += [ "//components/printing/browser" ]
   }
 }
 
 if (is_mac) {
   copy("mac_helpers") {
     sources = [
       "$root_out_dir/crashpad_handler",
     ]
 
+    if (is_component_build) {
+      sources += [ "$root_out_dir/libbase.dylib" ]
+    }
+
     deps = [
+      "//base",
       "//third_party/crashpad/crashpad/handler:crashpad_handler",
     ]
 
     outputs = [
       "$root_out_dir/Helpers/{{source_file_part}}",
     ]
   }
 }
 
 test("headless_browsertests") {
@@ skipping 18 matching lines @@
     "$root_out_dir/headless_lib.pak",
     "//net/tools/testserver/",
     "//third_party/pyftpdlib/",
     "//third_party/pywebsocket/",
     "//third_party/skia/",
     "//third_party/tlslite/",
     "test/data/",
   ]
 
   if (is_mac) {
-    data += [ "$root_out_dir/Helpers/crashpad_handler" ]
+    data_deps = [ ":mac_helpers" ]
   }
 
   defines = [ "HAS_OUT_OF_PROC_TEST_RUNNER" ]
 
   if (!is_component_build) {
     sources += [
       "lib/browser/headless_content_browser_client.cc",
       "lib/browser/headless_content_browser_client.h",
     ]
   }
@@ skipping 160 matching lines @@
 
 executable("headless_example") {
   sources = [
     "app/headless_example.cc",
   ]
 
   deps = [
     ":headless_shell_lib",
   ]
 }