Pepper: Move StreamAsFile out of trusted plugin.

components/nacl/renderer/file_downloader.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/nacl/renderer/file_downloader.h"
 
 #include "base/callback.h"
 #include "base/platform_file.h"
 #include "components/nacl/renderer/nexe_load_manager.h"
 #include "net/base/net_errors.h"
@@ skipping 52 matching lines @@
     total_bytes_received_ += data_length;
     if (!progress_cb_.is_null())
       progress_cb_.Run(total_bytes_received_, total_bytes_to_be_received_);
   }
 }
 
 void FileDownloader::didFinishLoading(
     blink::WebURLLoader* loader,
     double finish_time,
     int64_t total_encoded_data_length) {
+  if (status_ == SUCCESS) {
+    // Seek back to the beginning of the file that was just written so it's
+    // easy for consumers to use.
+    if (base::SeekPlatformFile(file_, base::PLATFORM_FILE_FROM_BEGIN, 0) != 0)
+      status_ = FAILED;
+  }
   status_cb_.Run(status_, http_status_code_);
   delete this;
 }
 
 void FileDownloader::didFail(
     blink::WebURLLoader* loader,
     const blink::WebURLError& error) {
   status_ = FAILED;
   if (error.domain.equals(blink::WebString::fromUTF8(net::kErrorDomain))) {
     switch (error.reason) {
       case net::ERR_ACCESS_DENIED:
       case net::ERR_NETWORK_ACCESS_DENIED:
         status_ = ACCESS_DENIED;
         break;
     }
   } else {
     // It's a WebKit error.
     status_ = ACCESS_DENIED;
   }
 }
 
 }  // namespace nacl