[Mac/GN] Set up the component build.

content/shell/BUILD.gn

 # Copyright 2014 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/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//build/config/win/console_app.gni")
 import("//build/config/win/manifest.gni")
 import("//media/media_options.gni")
@@ skipping 632 matching lines @@
 
   mac_app_bundle("content_shell_helper_app") {
     testonly = true
     output_name = content_shell_helper_name
     sources = [
       "app/shell_main.cc",
     ]
     deps = [
       ":content_shell_framework+link",
     ]
+    ldflags = [
+      "-rpath",
+      "@loader_path/../../../../../..",
+    ]
     info_plist_target = ":content_shell_helper_plist"
   }
 
   # The install_name_tool can only operate in-place, rather than producing a
   # unique output. Use the xcrun wrapper script to write a fake stamp output
   # file. After :content_shell_helper_app has been built and bundled, this
   # will run, modifying the executable in the bundle and writing out the
   # --stamp specified. This will change the mtime on the executable, but
   # because the stamp will also be updated, the
   # :content_shell_framework_bundle_data will re-copy the output. This only
@@ skipping 54 matching lines @@
       "{{bundle_resources_dir}}/{{source_file_part}}",
     ]
   }
 }
 
 mojom("mojo_bindings") {
   sources = [
     "common/layout_test/layout_test_bluetooth_fake_adapter_setter.mojom",
   ]
 }