Improve mini installer and official build GN flags

chrome/installer/mini_installer/BUILD.gn

Index: chrome/installer/mini_installer/BUILD.gn
diff --git a/chrome/installer/mini_installer/BUILD.gn b/chrome/installer/mini_installer/BUILD.gn
index 54aaea0155ef44658071ad4d01d52a0b0a3726bf..1fe4df9e139f500d444f9f076944be9a62fd1671 100644
--- a/chrome/installer/mini_installer/BUILD.gn
+++ b/chrome/installer/mini_installer/BUILD.gn
@@ -5,6 +5,7 @@
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
+import("//chrome/version.gni")
 import("//third_party/icu/config.gni")
 
 config("mini_installer_compiler_flags") {
@@ -12,6 +13,7 @@ config("mini_installer_compiler_flags") {
     "/bigobj",
     "/Gy",  # Enable function-level linking.
     "/GS-",  # Disable buffer security checking.
+    "/FS",  # Preserve previous PDB behavior.

[scottmg, 2015/09/03 21:22:25]

This is duplicated from build/config/compiler so that it's /GS- rather than /GS?
Is that really necessary?

[brettw, 2015/09/04 16:53:15]

I have no idea. I just copy the code from the GYP.

   ]
 
   cflags_c = [ "/TC" ]
@@ -40,11 +42,19 @@ source_set("lib") {
     "regkey.h",
   ]
 
+  configs -= [ "//build/config/compiler:compiler" ]
+  configs += [ ":mini_installer_compiler_flags" ]
+
   deps = [
     #"test_installer_sentinel",  TODO(GYP) bug 521052.
   ]
 }
 
+process_version("version") {
+  template_file = "mini_installer_exe_version.rc.version"
+  output = "$target_gen_dir/mini_installer_version.rc"
+}
+
 source_set("unit_tests") {
   testonly = true
 
@@ -155,7 +165,6 @@ action("archive") {
 executable("mini_installer") {
   sources = [
     "mini_installer.cc",
-    "mini_installer_exe_version.rc.version",
     packed_files_rc_file,
   ]
 
@@ -182,8 +191,8 @@ executable("mini_installer") {
   deps = [
     ":archive",
     ":lib",
+    ":version",
     "//build/config/sanitizers:deps",
     "//build/win:default_exe_manifest",
-    "//chrome/installer/setup",
   ]
 }