PPAPI: Add PluginPrivateFileSystem

ppapi/proxy/file_system_resource.h

Index: ppapi/proxy/file_system_resource.h
diff --git a/ppapi/proxy/file_system_resource.h b/ppapi/proxy/file_system_resource.h
index a7164343334c970bdd88fd0a264d36159ee8ca65..b56933d64c6ef12a0016910a836612d8ef9178d4 100644
--- a/ppapi/proxy/file_system_resource.h
+++ b/ppapi/proxy/file_system_resource.h
@@ -50,6 +50,9 @@ class PPAPI_PROXY_EXPORT FileSystemResource
 
   int32_t InitIsolatedFileSystem(const std::string& fsid,
                                  const base::Callback<void(int32_t)>& callback);
+  int32_t OpenPluginPrivateFileSystem(
+      const base::Callback<void(int32_t)>& callback);
+
  private:
   // Called when the host has responded to our open request.
   void OpenComplete(scoped_refptr<TrackedCallback> callback,
@@ -60,6 +63,16 @@ class PPAPI_PROXY_EXPORT FileSystemResource
       const base::Callback<void(int32_t)>& callback,
       const ResourceMessageReplyParams& params);
 
+  // Called when the host has responded to our OpenPluginPrivateFileSystem
+  // request.
+  void OpenPluginPrivateFileSystemComplete(
+      const base::Callback<void(int32_t)>& callback,
+      const ResourceMessageReplyParams& params,
+      const std::string& fsid);
+  void InitPluginPrivateFileSystemComplete(
+      const base::Callback<void(int32_t)>& callback,
+      const ResourceMessageReplyParams& params);
+
   PP_FileSystemType type_;
   bool called_open_;
   uint32_t callback_count_;