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

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

Index: third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h
diff --git a/third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h b/third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h
index 2e0e0a906381a4c90d2035f5c077e7d24ad3e0a7..e10e16faa5b98a4ab6ebf537c265cfcc0bc81149 100644
--- a/third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h
+++ b/third_party/WebKit/Source/wtf/allocator/PartitionAllocator.h
@@ -127,17 +127,6 @@ public:
 
     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() { }