mojo: Make EqualsTraits<> part of public C++ API

mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h

Index: mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h
diff --git a/mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h b/mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h
index 07f969dd84e5fd4e90f409ce383ae68ca5b37124..f18274ff06f17b7bd22fc008b611c715a4a7a4bf 100644
--- a/mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h
+++ b/mojo/public/cpp/bindings/lib/wtf_clone_equals_util.h
@@ -8,7 +8,7 @@
 #include <type_traits>
 
 #include "mojo/public/cpp/bindings/clone_traits.h"
-#include "mojo/public/cpp/bindings/lib/equals_traits.h"
+#include "mojo/public/cpp/bindings/equals_traits.h"
 #include "third_party/WebKit/Source/platform/wtf/HashMap.h"
 #include "third_party/WebKit/Source/platform/wtf/Optional.h"
 #include "third_party/WebKit/Source/platform/wtf/Vector.h"
@@ -39,15 +39,13 @@ struct CloneTraits<WTF::HashMap<K, V>, false> {
   }
 };
 
-namespace internal {
-
 template <typename T>
 struct EqualsTraits<WTF::Vector<T>, false> {
   static bool Equals(const WTF::Vector<T>& a, const WTF::Vector<T>& b) {
     if (a.size() != b.size())
       return false;
     for (size_t i = 0; i < a.size(); ++i) {
-      if (!internal::Equals(a[i], b[i]))
+      if (!Equals(a[i], b[i]))
         return false;
     }
     return true;
@@ -65,14 +63,13 @@ struct EqualsTraits<WTF::HashMap<K, V>, false> {
 
     for (auto iter = a.begin(); iter != a_end; ++iter) {
       auto b_iter = b.find(iter->key);
-      if (b_iter == b_end || !internal::Equals(iter->value, b_iter->value))
+      if (b_iter == b_end || !Equals(iter->value, b_iter->value))
         return false;
     }
     return true;
   }
 };
 
-}  // namespace internal
 }  // namespace mojo
 
 #endif  // MOJO_PUBLIC_CPP_BINDINGS_LIB_WTF_CLONE_EQUALS_UTIL_H_