NaCl: enable meta-based validation for shared libraries.

ppapi/native_client/src/trusted/plugin/file_downloader.h

Index: ppapi/native_client/src/trusted/plugin/file_downloader.h
diff --git a/ppapi/native_client/src/trusted/plugin/file_downloader.h b/ppapi/native_client/src/trusted/plugin/file_downloader.h
index a60c837ef80f28783d5f9c378188d95f3a9e93e6..e4e7ca4a8f675510f363a1e2aa3cf26dca229013 100644
--- a/ppapi/native_client/src/trusted/plugin/file_downloader.h
+++ b/ppapi/native_client/src/trusted/plugin/file_downloader.h
@@ -10,6 +10,7 @@
 #include "native_client/src/include/nacl_macros.h"
 #include "native_client/src/include/nacl_string.h"
 #include "native_client/src/trusted/plugin/callback_source.h"
+#include "native_client/src/trusted/reverse_service/nacl_file_info.h"
 #include "ppapi/c/private/pp_file_handle.h"
 #include "ppapi/c/trusted/ppb_file_io_trusted.h"
 #include "ppapi/c/trusted/ppb_url_loader_trusted.h"
@@ -85,14 +86,16 @@ class FileDownloader {
                   StreamCallbackSource* stream_callback_source);
 
   // Bypasses downloading and takes a handle to the open file. To get the fd,
-  // call GetPOSIXFileDescriptor().
-  void OpenFast(const nacl::string& url, PP_FileHandle file_handle);
+  // call GetFileInfo().
+  void OpenFast(const nacl::string& url, PP_FileHandle file_handle,
+                uint64_t nonce);
 
+  // Return a structure describing the file opened, including a file desc.
   // If downloading and opening succeeded, this returns a valid read-only
   // POSIX file descriptor.  On failure, the return value is an invalid
   // descriptor.  The file descriptor is owned by this instance, so the
   // delegate does not have to close it.
-  int32_t GetPOSIXFileDescriptor();
+  struct NaClFileInfo GetFileInfo();
 
   // Returns the time delta between the call to Open() and this function.
   int64_t TimeSinceOpenMilliseconds() const;
@@ -160,6 +163,7 @@ class FileDownloader {
   pp::CompletionCallback file_open_notify_callback_;
   pp::FileIO file_reader_;
   PP_FileHandle file_handle_;
+  uint64_t nonce_;
   const PPB_FileIOTrusted* file_io_trusted_interface_;
   const PPB_URLLoaderTrusted* url_loader_trusted_interface_;
   pp::URLLoader url_loader_;