Windows-specific bits for loading V8's initial snapshot from external files.

gin/isolate_holder.cc

Index: gin/isolate_holder.cc
diff --git a/gin/isolate_holder.cc b/gin/isolate_holder.cc
index 2b6d64b35c042b2e183e6cc0c963c2f2ab96d392..26450b652c409ecb190976ac35587a70bb91465a 100644
--- a/gin/isolate_holder.cc
+++ b/gin/isolate_holder.cc
@@ -47,9 +47,13 @@ bool MapV8Files(base::FilePath* natives_path, base::FilePath* snapshot_path,
 
   g_mapped_natives = new base::MemoryMappedFile;
   if (!g_mapped_natives->IsValid()) {
+#ifndef OS_WIN
     if (natives_fd == -1
         ? !g_mapped_natives->Initialize(base::File(*natives_path, flags))
         : !g_mapped_natives->Initialize(base::File(natives_fd))) {
+#else
+    if (!g_mapped_natives->Initialize(base::File(*natives_path, flags))) {
+#endif  // OS_WIN
       delete g_mapped_natives;
       g_mapped_natives = NULL;
       LOG(FATAL) << "Couldn't mmap v8 natives data file";
@@ -59,9 +63,13 @@ bool MapV8Files(base::FilePath* natives_path, base::FilePath* snapshot_path,
 
   g_mapped_snapshot = new base::MemoryMappedFile;
   if (!g_mapped_snapshot->IsValid()) {
+#ifndef OS_WIN
     if (snapshot_fd == -1
         ? !g_mapped_snapshot->Initialize(base::File(*snapshot_path, flags))
         : !g_mapped_snapshot->Initialize(base::File(snapshot_fd))) {
+#else
+    if (!g_mapped_snapshot->Initialize(base::File(*snapshot_path, flags))) {
+#endif  // OS_WIN
       delete g_mapped_snapshot;
       g_mapped_snapshot = NULL;
       LOG(ERROR) << "Couldn't mmap v8 snapshot data file";
@@ -78,6 +86,8 @@ const int v8_snapshot_dir =
     base::DIR_ANDROID_APP_DATA;
 #elif defined(OS_POSIX)
     base::DIR_EXE;
+#elif defined(OS_WIN)
+    base::DIR_MODULE;
 #endif  // defined(OS_ANDROID)
 #endif  // !defined(OS_MACOSX)