IPC::ChannelMojo: Introduce IPC::MojoBootstrap for Windows

mojo/embedder/platform_handle.h

Index: mojo/embedder/platform_handle.h
diff --git a/mojo/embedder/platform_handle.h b/mojo/embedder/platform_handle.h
index 39da4a9624965abbffd83e19685544e9bcc2c218..e127fe810db2cc808bd1608a7afa2b8f760cad3d 100644
--- a/mojo/embedder/platform_handle.h
+++ b/mojo/embedder/platform_handle.h
@@ -5,6 +5,7 @@
 #ifndef MOJO_EMBEDDER_PLATFORM_HANDLE_H_
 #define MOJO_EMBEDDER_PLATFORM_HANDLE_H_
 
+#include "base/files/platform_file.h"
 #include "build/build_config.h"
 #include "mojo/system/system_impl_export.h"
 
@@ -21,6 +22,7 @@ struct MOJO_SYSTEM_IMPL_EXPORT PlatformHandle {
   explicit PlatformHandle(int fd) : fd(fd) {}
 
   void CloseIfNecessary();
+  base::PlatformFile ToPlaformFile() const { return fd; }
 
   bool is_valid() const { return fd != -1; }
 
@@ -32,6 +34,7 @@ struct MOJO_SYSTEM_IMPL_EXPORT PlatformHandle {
   explicit PlatformHandle(HANDLE handle) : handle(handle) {}
 
   void CloseIfNecessary();
+  base::PlatformFile ToPlaformFile() const { return handle; }
 
   bool is_valid() const { return handle != INVALID_HANDLE_VALUE; }