Make npapi_test_plugin build on Win64

webkit/plugins/npapi/test/plugin_geturl_test.cc

 // Copyright (c) 2011 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 "webkit/plugins/npapi/test/plugin_geturl_test.h"
 
 #include <stdio.h>
 
 #include "base/basictypes.h"
 #include "base/file_util.h"
@@ skipping 248 matching lines @@
                  cast_validity_check);
   unsigned long stream_id = reinterpret_cast<unsigned long>(
       stream->notifyData);
   switch (stream_id) {
     case SELF_URL_STREAM_ID:
       self_url_.append(static_cast<char*>(buffer), len);
       break;
     case FETCHED_URL_STREAM_ID:
       {
         char read_buffer[STREAM_CHUNK];
-        int32 bytes = fread(read_buffer, 1, len, test_file_);
+        int32 bytes =
+            static_cast<int32>(fread(read_buffer, 1, len, test_file_));
         // Technically, fread could return fewer than len
         // bytes.  But this is not likely.
         if (bytes != len)
           SetError("Did not read correct bytelength from source file");
         if (memcmp(read_buffer, buffer, len))
           SetError("Content mismatch between data and source!");
       }
       break;
     case BOGUS_URL_STREAM_ID:
       SetError("Unexpected write callback for BOGUS_URL");
@@ skipping 130 matching lines @@
                                          int32_t status,
                                          void* notify_data) {
   if (!base::strcasecmp(url, "http://mock.http/npapi/plugin_read_page.html")) {
     received_url_redirect_notification_ = true;
     // Disallow redirect notification.
     HostFunctions()->urlredirectresponse(id(), notify_data, false);
   }
 }
 
 } // namespace NPAPIClient