Pepper WebSocket API: Implement new design Chrome IPC

ppapi/thunk/ppb_websocket_api.h

Index: ppapi/thunk/ppb_websocket_api.h
diff --git a/ppapi/thunk/ppb_websocket_api.h b/ppapi/thunk/ppb_websocket_api.h
index e5b7791f5c88825daae52fd1cb63b18ca5d09379..dce5d6fcb36ddb82c37960c9bd48a3f63f437f95 100644
--- a/ppapi/thunk/ppb_websocket_api.h
+++ b/ppapi/thunk/ppb_websocket_api.h
@@ -8,6 +8,7 @@
 #include "base/memory/ref_counted.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/ppb_websocket.h"
+#include "ppapi/thunk/ppapi_thunk_export.h"
 
 namespace ppapi {
 
@@ -19,7 +20,7 @@ namespace thunk {
 // WebSocket API. See also following official specifications.
 //  - The WebSocket Protocol http://tools.ietf.org/html/rfc6455
 //  - The WebSocket API      http://dev.w3.org/html5/websockets/
-class PPB_WebSocket_API {
+class PPAPI_THUNK_EXPORT PPB_WebSocket_API {
  public:
   virtual ~PPB_WebSocket_API() {}