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

third_party/WebKit/Source/platform/heap/HeapTest.cpp

 /*
  * 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 2761 matching lines @@
             dequeUW2->swap(cDequeUW);
             dequeUW->swap(cDequeUW);
 
             // Swap set and set2 in a roundabout way.
             MemberSet& cset1 = container->set;
             MemberSet& cset2 = container->set2;
             set->swap(cset1);
             set2->swap(cset2);
             set->swap(cset2);
             cset1.swap(cset2);
-            cset2.swap(set2);
+            cset2.swap(*set2);
 
             MemberCountedSet& cCountedSet = container->set3;
             set3->swap(cCountedSet);
             EXPECT_EQ(0u, set3->size());
             set3->swap(cCountedSet);
 
             // Triple swap.
-            container->map.swap(memberMember2);
+            container->map.swap(*memberMember2);
             MemberMember& containedMap = container->map;
             memberMember3->swap(containedMap);
-            memberMember3->swap(memberMember);
+            memberMember3->swap(*memberMember);
 
             EXPECT_TRUE(memberMember->get(one) == two);
             EXPECT_TRUE(memberMember->get(two) == three);
             EXPECT_TRUE(memberMember->get(three) == four);
             EXPECT_TRUE(memberMember->get(four) == one);
             EXPECT_TRUE(primitiveMember->get(1) == two);
             EXPECT_TRUE(primitiveMember->get(2) == three);
             EXPECT_TRUE(primitiveMember->get(3) == four);
             EXPECT_TRUE(primitiveMember->get(4) == one);
             EXPECT_EQ(1, memberPrimitive->get(four));
@@ skipping 3848 matching lines @@
         conservativelyCollectGarbage();
         EXPECT_EQ(wrapper, weakWrapper->value());
         // Stub out any stack reference.
         wrapper = nullptr;
     }
     preciselyCollectGarbage();
     EXPECT_EQ(nullptr, weakWrapper->value());
 }
 
 } // namespace blink