Update PluginInstance for decrypt-and-decode video.

ppapi/proxy/ppp_content_decryptor_private_proxy.cc

 // Copyright (c) 2012 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 "ppapi/proxy/ppp_content_decryptor_private_proxy.h"
 
 #include "base/platform_file.h"
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/ppb_core.h"
 #include "ppapi/proxy/content_decryptor_private_serializer.h"
@@ skipping 82 matching lines @@
 
 bool InitializePppDecryptorBuffer(PP_Instance instance,
                                   HostDispatcher* dispatcher,
                                   PP_Resource resource,
                                   PPPDecryptor_Buffer* buffer) {
   if (!buffer) {
     NOTREACHED();
     return false;
   }
 
+  if (resource == 0) {
+    buffer->resource = HostResource();
+    buffer->handle = base::SharedMemoryHandle();
+    buffer->size = 0;
+    return true;
+  }
+

[xhwang, 2012/10/18 01:17:04]

Sorry for the rebase noise. Add this line since the resource could be 0, e.g.
for empty extra_data, empty input buffer etc.

   if (!AddRefResourceForPlugin(dispatcher, resource))
     return false;
 
   HostResource host_resource;
   host_resource.SetHostResource(instance, resource);
 
   uint32_t size = 0;
   if (DescribeHostBufferResource(resource, &size) == PP_FALSE)
     return false;
 
@@ skipping 376 matching lines @@
         ppp_decryptor_impl_->DecryptAndDecode,
         instance,
         decoder_type,
         plugin_resource,
         const_cast<const PP_EncryptedBlockInfo*>(&block_info));
   }
 }
 
 }  // namespace proxy
 }  // namespace ppapi