Decided that BPartition::ImmutableDelegate would basically be a big

collection of no-op methods, which could as well be implemented in
BPartition itself. This makes the Delegate hierarchy unnecessary:
MutableDelegate becomes Delegate, and we save a few casts as a side
effect.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22547 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/MutablePartition.h

@@ -72,7 +72,7 @@ public:
 
 private:
 								BMutablePartition(
-									BPartition::MutableDelegate* delegate);
+									BPartition::Delegate* delegate);
 								~BMutablePartition();
 
 			status_t			Init(const user_partition_data* partitionData,
@@ -81,11 +81,11 @@ private:
 			const user_partition_data* PartitionData() const;
 
 private:
-			friend class BPartition::MutableDelegate;
+			friend class BPartition::Delegate;
 
-			BPartition::MutableDelegate* GetDelegate() const;
+			BPartition::Delegate* GetDelegate() const;
 
-			BPartition::MutableDelegate* fDelegate;
+			BPartition::Delegate* fDelegate;
 			user_partition_data* fData;
 			BMutablePartition*	fParent;
 			BList				fChildren;

headers/private/storage/Partition.h

@@ -142,8 +142,6 @@ public:
 	
 private:
 	class Delegate;
-	class ImmutableDelegate;
-	class MutableDelegate;
 
 	BPartition();
 	BPartition(const BPartition &);