Issue 5137 - [emscripten] Added basic filter storage implementation

compiled/subscription/Subscription.h

Index: compiled/subscription/Subscription.h
===================================================================
--- a/compiled/subscription/Subscription.h
+++ b/compiled/subscription/Subscription.h
@@ -77,23 +77,27 @@ public:
   BINDINGS_EXPORTED const String& GetID() const
   {
     return mID;
   }
 
   SUBSCRIPTION_STRING_PROPERTY(mTitle, SUBSCRIPTION_TITLE, GetTitle, SetTitle);
   SUBSCRIPTION_PROPERTY(bool, mDisabled, SUBSCRIPTION_DISABLED,
         GetDisabled, SetDisabled);
+  SUBSCRIPTION_PROPERTY(bool, mListed, NONE, GetListed, SetListed);

[sergei, 2017/08/24 13:32:06]

To tell the truth I find this flag a bit questionable, but I think we can have
it.

 
   BINDINGS_EXPORTED unsigned GetFilterCount() const
   {
     return mFilters.size();
   }
 
   BINDINGS_EXPORTED Filter* FilterAt(unsigned index);
   BINDINGS_EXPORTED int IndexOfFilter(Filter* filter);
   BINDINGS_EXPORTED OwnedString Serialize() const;
   BINDINGS_EXPORTED OwnedString SerializeFilters() const;
 
   static BINDINGS_EXPORTED Subscription* FromID(const String& id);
+
+  template<typename T>
+  T* As();
 };
 
 typedef intrusive_ptr<Subscription> SubscriptionPtr;