Allow std::unordered_*.

cc/quads/render_pass.h

Index: cc/quads/render_pass.h
diff --git a/cc/quads/render_pass.h b/cc/quads/render_pass.h
index 9ba727e6df4d3ecbcd70f99594219c70db61847b..552643d69b02c9bca1a6c25903e0a87f2c0429ff 100644
--- a/cc/quads/render_pass.h
+++ b/cc/quads/render_pass.h
@@ -12,6 +12,7 @@
 
 #include "base/callback.h"
 #include "base/containers/hash_tables.h"
+#include "base/hash.h"
 #include "base/macros.h"
 #include "cc/base/cc_export.h"
 #include "cc/base/list_container.h"
@@ -139,7 +140,7 @@ namespace BASE_HASH_NAMESPACE {
 template <>
 struct hash<cc::RenderPassId> {
   size_t operator()(cc::RenderPassId key) const {
-    return base::HashPair(key.layer_id, static_cast<int>(key.index));
+    return base::HashInts(key.layer_id, static_cast<int>(key.index));
   }
 };
 }  // namespace BASE_HASH_NAMESPACE