Optional aInstancePtr: objectA run time mechanism for interface discovery.
NS_OK if the interface is supported by the associated instance, NS_NOINTERFACE if it is not.
aInstancePtr must not be null.
[in] A requested interface IID
[out] A pointer to an interface pointer to receive the result.
Called when the entire stream has been loaded.
the stream loader that loaded the stream.
the context parameter of the underlying channel
the status of the underlying channel
the length of the data loaded
the data
This method will always be called asynchronously by the nsIStreamLoader involved, on the thread that called the loader's init() method.
If the observer wants to take over responsibility for the data buffer (result), it returns NS_SUCCESS_ADOPTED_DATA in place of NS_OK as its success code. The loader will then "forget" about the data and not free() it after onStreamComplete() returns; observer must call free() when the data is no longer required.
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Increases the reference count for this interface. The associated instance will not be deleted unless the reference count is returned to zero.
Returns
The resulting reference count.