Fix minor spelling error.

Change-Id: Ibcde4444cef08fd7510f4d0ccc3bf60c16731d77
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Remove unneeded #import.

Change-Id: I8c225d0f2c74acaf87cdc7d6559cdac3cd7d11fc
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Use NSView pointers instead of void pointers.

Change-Id: If6bc3fa07068ea1991c1740127bbd463b796cc07
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>
Introduce a macro for forward declaring Objective-C classes.

Change-Id: I2334aac6c70861ef18875a4b5ef4116b9eb5592e
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@digia.com>