Added authorized install with a script to do the copy.

chrome/installer/mac/app/BUILD.gn

Index: chrome/installer/mac/app/BUILD.gn
diff --git a/chrome/installer/mac/app/BUILD.gn b/chrome/installer/mac/app/BUILD.gn
index 31101a70e85d5fc8af89f440a7c4c291a45433c9..2a3f32c429f8aac60fb443a615dd1cfff9fb5014 100644
--- a/chrome/installer/mac/app/BUILD.gn
+++ b/chrome/installer/mac/app/BUILD.gn
@@ -7,6 +7,7 @@ import("//build/config/mac/rules.gni")
 
 source_set("mac_installer_base") {
   sources = [
+    "AuthorizedInstall.m",
     "Downloader.m",
     "NSAlert+ChromeInstallerAdditions.m",
     "NSError+ChromeInstallerAdditions.m",
@@ -28,12 +29,14 @@ mac_app_bundle("mac_installer_app") {
 
   deps = [
     ":mac_installer_base",
+    ":mac_installer_resources",
     ":mac_installer_xibs",
   ]
 
   libs = [
     "AppKit.framework",
     "CoreFoundation.framework",
+    "Security.framework",
   ]
 }
 
@@ -43,6 +46,15 @@ mac_xib_bundle_data("mac_installer_xibs") {
   ]
 }
 
+bundle_data("mac_installer_resources") {
+  sources = [
+    "copy_to_disk.sh",
+  ]
+  outputs = [
+    "{{bundle_resources_dir}}/install.sh",
+  ]
+}
+
 executable("mac_installer") {
   sources = [
     "main.m",