SkTDynamicHash: remove need for Equals(const T&, const Key&) param.

tests/DynamicHashTest.cpp

Index: tests/DynamicHashTest.cpp
diff --git a/tests/DynamicHashTest.cpp b/tests/DynamicHashTest.cpp
index b2d0f0382c57ae5b353761d72ebd9139cd5973a6..bb9367b46df5c4d0a23000341c61a68c529afe81 100644
--- a/tests/DynamicHashTest.cpp
+++ b/tests/DynamicHashTest.cpp
@@ -17,9 +17,8 @@ struct Entry {
 
 const int& GetKey(const Entry& entry) { return entry.key; }
 uint32_t GetHash(const int& key) { return key; }
-bool AreEqual(const Entry& entry, const int& key) { return entry.key == key; }
 
-class Hash : public SkTDynamicHash<Entry, int, GetKey, GetHash, AreEqual> {
+class Hash : public SkTDynamicHash<Entry, int, GetKey, GetHash> {
 public:
     Hash() : INHERITED() {}
 
@@ -28,7 +27,7 @@ public:
     int countCollisions(const int& key) const { return this->INHERITED::countCollisions(key); }
 
 private:
-    typedef SkTDynamicHash<Entry, int, GetKey, GetHash, AreEqual> INHERITED;
+    typedef SkTDynamicHash<Entry, int, GetKey, GetHash> INHERITED;
 };
 
 }  // namespace