Make WebURLLoader capable of retaining received buffers.

content/child/npapi/plugin_url_fetcher.h

Index: content/child/npapi/plugin_url_fetcher.h
diff --git a/content/child/npapi/plugin_url_fetcher.h b/content/child/npapi/plugin_url_fetcher.h
index 237c0b6411b0f183a9b3c9665ce0555588bbbb9b..1fb848970e8bd8130348471ca54efb9106f69acb 100644
--- a/content/child/npapi/plugin_url_fetcher.h
+++ b/content/child/npapi/plugin_url_fetcher.h
@@ -57,9 +57,7 @@ class PluginURLFetcher : public RequestPeer {
                           const ResourceResponseInfo& info) override;
   void OnReceivedResponse(const ResourceResponseInfo& info) override;
   void OnDownloadedData(int len, int encoded_data_length) override;
-  void OnReceivedData(const char* data,
-                      int data_length,
-                      int encoded_data_length) override;
+  void OnReceivedData(scoped_ptr<ReceivedData> data) override;
   void OnCompletedRequest(int error_code,
                           bool was_ignored_by_handler,
                           bool stale_copy_in_cache,