Make PlatformFileForTransit a class on Windows.

content/common/sandbox_util.cc

Index: content/common/sandbox_util.cc
diff --git a/content/common/sandbox_util.cc b/content/common/sandbox_util.cc
index 4b1dcef4a9124b3b8a905ad6301886ae55a6d9a3..eea8486ca1d52506265812eda4eb5ddec4841cc4 100644
--- a/content/common/sandbox_util.cc
+++ b/content/common/sandbox_util.cc
@@ -22,8 +22,11 @@ IPC::PlatformFileForTransit BrokerGetFileHandleForProcess(
   DWORD options = DUPLICATE_SAME_ACCESS;
   if (should_close_source)
     options |= DUPLICATE_CLOSE_SOURCE;
-  if (!content::BrokerDuplicateHandle(handle, target_process_id, &out_handle,
-                                      0, options)) {
+  HANDLE raw_handle = INVALID_HANDLE_VALUE;
+  if (content::BrokerDuplicateHandle(handle, target_process_id, &raw_handle, 0,
+                                     options)) {
+    out_handle = IPC::PlatformFileForTransit(raw_handle, target_process_id);
+  } else {
     out_handle = IPC::InvalidPlatformFileForTransit();
   }
 #elif defined(OS_POSIX)