Fix the Win64 GN installer config

- Add the copy_first_run target (equivalent of https://cs.chromium.org/chromium/src/chrome/chrome_exe.gypi?q=%22First+run%22&sq=package:chromium&dr=C&l=462)
- Remove courgette.exe from the official Win64 archives as we're using courgette64.exe

BUG=628056

Review-Url: https://codereview.chromium.org/2152333002
Cr-Commit-Position: refs/heads/master@{#406173}

chrome/BUILD.gn

@@ -152,6 +152,7 @@ if (!is_android && !is_mac) {
       deps += [
         ":chrome_dll",
         ":chrome_exe_version",
+        ":copy_first_run",
         ":file_pre_reader",
         ":visual_elements_resources",
         "//base",
@@ -445,6 +446,14 @@ if (is_win) {
       }
     }
   }
+  copy("copy_first_run") {
+    sources = [
+      "app/firstRun",
+    ]
+    outputs = [
+      "$root_out_dir/First Run",
+    ]
+  }
 } else if (is_mac) {
   chrome_helper_name = chrome_product_full_name + " Helper"
   chrome_framework_name = chrome_product_full_name + " Framework"

courgette/BUILD.gn

@@ -108,6 +108,23 @@ if (!is_ios) {
       "//build/win:default_exe_manifest",
     ]
   }
+
+  # The official build scripts expect courgette.exe to be in the official build
+  # archives but it's not clear if they really need it, copy courgette64.exe to
+  # courgette.exe to work around this. https://crbug.com/629243
+  if (is_win && current_cpu == "x64") {
+    copy("copy_courgette64_to_courgette") {
+      sources = [
+        "$root_out_dir/courgette64.exe",
+      ]
+      outputs = [
+        "$root_out_dir/courgette.exe",
+      ]
+      deps = [
+        ":courgette",
+      ]
+    }
+  }
 }
 
 test("courgette_unittests") {