Hooking MHTML generation to the browser.

ipc/ipc_platform_file.h

Index: ipc/ipc_platform_file.h
diff --git a/ipc/ipc_platform_file.h b/ipc/ipc_platform_file.h
index e08b8a5f7a71fe54a911865028b30c89cdb04ca3..ac27abca340484560e3b47d19759ddeeb0363f45 100644
--- a/ipc/ipc_platform_file.h
+++ b/ipc/ipc_platform_file.h
@@ -9,6 +9,7 @@
 #include "base/basictypes.h"
 
 #include "base/platform_file.h"
+#include "base/process.h"
 
 #if defined(OS_POSIX)
 #include "base/file_descriptor_posix.h"
@@ -39,6 +40,11 @@ inline base::PlatformFile PlatformFileForTransitToPlatformFile(
 #endif
 }
 
+// Returns a file handle equivalent to |file| that can be used in |process|.
+PlatformFileForTransit GetFileHandleForProcess(base::PlatformFile file,
+                                               base::ProcessHandle process,
+                                               bool close_source_handle);
+
 }  // namespace IPC
 
 #endif  // IPC_IPC_PLATFORM_FILE_H_