Remove C::swap(C*) where C = Hash{Map,Set}<T>.

third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 109 matching lines @@
         return malloc<void*, void>(bytes, WTF_HEAP_PROFILER_TYPE_NAME(T));
     }
     static void
     deleteArray(void* ptr)
     {
         free(ptr); // Not the system free, the one from this class.
     }
 
     static bool isAllocationAllowed() { return true; }
 
-    template<typename T>
-    struct OtherType {
-        typedef T* Type;
-    };
-
-    template<typename T>
-    static T& getOther(T* other)
-    {
-        return *other;
-    }
-
     static void enterGCForbiddenScope() { }
     static void leaveGCForbiddenScope() { }
 
 private:
     static void* allocateBacking(size_t, const char* typeName);
 };
 
 // Specializations for heap profiling, so type profiling of |char| is possible
 // even in official builds (because |char| makes up a large portion of the heap.)
 template <> WTF_EXPORT char* PartitionAllocator::allocateVectorBacking<char>(size_t);
@@ skipping 14 matching lines @@
     { \
         ASSERT(location); \
         return location; \
     } \
 private: \
 typedef int __thisIsHereToForceASemicolonAfterThisMacro
 
 using WTF::PartitionAllocator;
 
 #endif // WTF_PartitionAllocator_h