Remove obsolete namespace mappings.

Summary:
The previous release 2.4 had a mapping to alias the older
namespace to rocksdb. This mapping is not needed in the new
release.

Test Plan:
make check
make release

Reviewers: emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13359

include/rocksdb/arena.h

@@ -38,6 +38,4 @@ class Arena {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_ARENA_H_

include/rocksdb/cache.h

@@ -103,6 +103,4 @@ class Cache {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_UTIL_CACHE_H_

include/rocksdb/compaction_filter.h

@@ -68,6 +68,4 @@ class DefaultCompactionFilterFactory : public CompactionFilterFactory {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_COMPACTION_FILTER_H_

include/rocksdb/comparator.h

@@ -60,6 +60,4 @@ extern const Comparator* BytewiseComparator();
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_COMPARATOR_H_

include/rocksdb/db.h

@@ -308,6 +308,4 @@ Status RepairDB(const std::string& dbname, const Options& options);
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_DB_H_

include/rocksdb/env.h

@@ -565,6 +565,4 @@ class EnvWrapper : public Env {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_ENV_H_

include/rocksdb/filter_policy.h

@@ -66,6 +66,5 @@ class FilterPolicy {
 extern const FilterPolicy* NewBloomFilterPolicy(int bits_per_key);
 
 }
-#include "rocksdb/rocksdb_to_leveldb.h"
 
 #endif  // STORAGE_ROCKSDB_INCLUDE_FILTER_POLICY_H_

include/rocksdb/iterator.h

@@ -99,6 +99,4 @@ extern Iterator* NewErrorIterator(const Status& status);
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_ITERATOR_H_

include/rocksdb/ldb_tool.h

@@ -12,6 +12,4 @@ class LDBTool {
 
 } // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif // STORAGE_ROCKSDB_INCLUDE_LDB_TOOL_H

include/rocksdb/memtablerep.h

@@ -256,6 +256,4 @@ public:
 
 }
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif // STORAGE_ROCKSDB_DB_MEMTABLEREP_H_

include/rocksdb/merge_operator.h

@@ -7,7 +7,7 @@
 
 #include <string>
 #include <deque>
-#include "rocksdb/slice.h"  // TODO: Remove this when migration is done;
+#include "rocksdb/slice.h"
 
 namespace rocksdb {
 
@@ -144,6 +144,4 @@ class AssociativeMergeOperator : public MergeOperator {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_MERGE_OPERATOR_H_

include/rocksdb/options.h

@@ -683,6 +683,4 @@ struct FlushOptions {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_OPTIONS_H_

include/rocksdb/perf_context.h

@@ -36,6 +36,4 @@ extern __thread PerfContext perf_context;
 
 }
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif

include/rocksdb/rocksdb_to_leveldb.h

@@ -1,9 +0,0 @@
-// Copyright (c) 2013 Facebook.
-
-#pragma once
-
-//
-// This is for backward compatibility with applications that use the
-// 'leveldb' namespace. This file will be deleted in a future release.
-//
-namespace leveldb = rocksdb;

include/rocksdb/slice.h

@@ -119,6 +119,4 @@ inline int Slice::compare(const Slice& b) const {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_SLICE_H_

include/rocksdb/slice_transform.h

@@ -40,6 +40,4 @@ extern const SliceTransform* NewNoopTransform();
 
 }
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_SLICE_TRANSFORM_H_

include/rocksdb/statistics.h

@@ -260,6 +260,4 @@ inline void SetTickerCount(std::shared_ptr<Statistics> statistics,
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_STATISTICS_H_

include/rocksdb/status.h

@@ -123,6 +123,4 @@ inline void Status::operator=(const Status& s) {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_STATUS_H_

include/rocksdb/table_builder.h

@@ -92,6 +92,4 @@ class TableBuilder {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_TABLE_BUILDER_H_

include/rocksdb/transaction_log.h

@@ -78,6 +78,4 @@ class TransactionLogIterator {
 };
 } //  namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_TRANSACTION_LOG_ITERATOR_H_

include/rocksdb/types.h

@@ -12,6 +12,4 @@ typedef uint64_t SequenceNumber;
 
 }  //  namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif //  STORAGE_ROCKSDB_INCLUDE_TYPES_H_

include/rocksdb/universal_compaction.h

@@ -67,6 +67,4 @@ class CompactionOptionsUniversal {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_UNIVERSAL_COMPACTION_OPTIONS_H

include/rocksdb/write_batch.h

@@ -96,6 +96,4 @@ class WriteBatch {
 
 }  // namespace rocksdb
 
-#include "rocksdb/rocksdb_to_leveldb.h"
-
 #endif  // STORAGE_ROCKSDB_INCLUDE_WRITE_BATCH_H_