chore: [gn] changes to BUILD.gn for windows (#13434)

Grab basket of changes needed to get the `electron_lib` target building on Windows with GN.

BUILD.gn

@@ -256,6 +256,12 @@ static_library("electron_lib") {
     ]
     configs += [ ":gio_unix" ]
   }
+  if (is_win) {
+    deps += [
+      "//third_party/wtl",
+      "//third_party/breakpad:client",
+    ]
+  }
   defines = [
     # This is defined in skia/skia_common.gypi.
     "SK_SUPPORT_LEGACY_GETTOPDEVICE",
@@ -282,7 +288,7 @@ static_library("electron_lib") {
     # the #includes can be agnostic about where crashpad is vendored.
     "//third_party/crashpad",
   ]
-  if (is_linux) {
+  if (is_linux || is_win) {
     include_dirs += [
       "//third_party/breakpad",
     ]
@@ -296,6 +302,7 @@ static_library("electron_lib") {
       "*_x11.cc",
       "*_gtk.h",
       "*_gtk.cc",
+      "*\blibrary_loaders/*",
     ]
   }
   if (!is_win) {

build/node/BUILD.gn

@@ -1,12 +1,16 @@
 action("configure_node") {
   script = "//third_party/electron_node/configure"
+  ssl_libname_suffix = ""
+  if (is_win) {
+    ssl_libname_suffix = ".dll"
+  }
   args = [
     "--enable-static",
     "--release-urlbase=https://atom.io/download/electron",
     "--shared",
     "--shared-openssl",
     "--shared-openssl-includes=" + rebase_path("//third_party/boringssl/src/include"),
-    "--shared-openssl-libname=boringssl",
+    "--shared-openssl-libname=boringssl" + ssl_libname_suffix,
     "--shared-openssl-libpath=" + rebase_path(root_out_dir),
     "--without-npm",
     "--without-bundled-v8",
@@ -72,6 +76,9 @@ action("build_node") {
   if (is_linux) {
     outputs = [ "$target_out_dir/Release/lib/libnode.so" ]
   }
+  if (is_win) {
+    outputs = [ "$target_out_dir/Release/node.dll" ]
+  }
 }
 
 node_libs = get_target_outputs(":build_node")