Allow Mojo structs as map keys

mojo/public/cpp/bindings/tests/BUILD.gn

Index: mojo/public/cpp/bindings/tests/BUILD.gn
diff --git a/mojo/public/cpp/bindings/tests/BUILD.gn b/mojo/public/cpp/bindings/tests/BUILD.gn
index 181fcea6cd7e537570015f485a8e162456d4eb9b..7326f2a4a3194536897c5c5a64bd25bff2e8d3b4 100644
--- a/mojo/public/cpp/bindings/tests/BUILD.gn
+++ b/mojo/public/cpp/bindings/tests/BUILD.gn
@@ -21,6 +21,7 @@ source_set("tests") {
     "data_view_unittest.cc",
     "equals_unittest.cc",
     "handle_passing_unittest.cc",
+    "hash_unittest.cc",
     "interface_ptr_unittest.cc",
     "map_common_test.h",
     "map_unittest.cc",
@@ -86,6 +87,7 @@ if (!is_ios) {
       "map_common_test.h",
       "variant_test_util.h",
       "wtf_array_unittest.cc",
+      "wtf_hash_unittest.cc",
       "wtf_map_unittest.cc",
       "wtf_types_unittest.cc",
     ]
@@ -94,6 +96,7 @@ if (!is_ios) {
       "//mojo/public/cpp/bindings",
       "//mojo/public/cpp/system",
       "//mojo/public/interfaces/bindings/tests:test_interfaces",
+      "//mojo/public/interfaces/bindings/tests:test_interfaces_blink",
       "//mojo/public/interfaces/bindings/tests:test_wtf_types",
       "//mojo/public/interfaces/bindings/tests:test_wtf_types_blink",
       "//testing/gtest",