Validate map keys in C++ Mojo bindings

mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd16_uknown_non_extensible_enum_map_entry.data

Index: mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd16_uknown_non_extensible_enum_map_entry.data
diff --git a/mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd10_one_null_key.data b/mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd16_uknown_non_extensible_enum_map_entry.data
similarity index 58%
copy from mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd10_one_null_key.data
copy to mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd16_uknown_non_extensible_enum_map_entry.data
index 9127a26c25eca70652abca164f0fcb2f9b73929e..9a981cb2f3b707e185db10bc221d5a31c70a3b65 100644
--- a/mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd10_one_null_key.data
+++ b/mojo/public/interfaces/bindings/tests/data/validation/conformance_mthd16_uknown_non_extensible_enum_map_entry.data
@@ -1,15 +1,15 @@
 [dist4]message_header  // num_bytes
 [u4]0                  // version
 [u4]0                  // interface ID
-[u4]10                 // name
+[u4]16                 // name
 [u4]0                  // flags
 [u4]0                  // padding
 [anchr]message_header
 
-[dist4]method10_params  // num_bytes
+[dist4]method16_params  // num_bytes
 [u4]0                   // version
 [dist8]map_data_ptr     // param0
-[anchr]method10_params
+[anchr]method16_params
 
 [anchr]map_data_ptr
 [dist4]map_data_struct_header  // num_bytes
@@ -19,22 +19,17 @@
 [anchr]map_data_struct_header
 
 [anchr]key_array_ptr
-[dist4]key_array_member   // num_bytes
-[u4]2                     // num_elements
-[dist8]key_string_1
-[u8]0                     // one null key
+[dist4]key_array_member     // num_bytes
+[u4]2                       // num_elements
+[u4]0x5678                  // Unknown value is not allowed for non-extensible
+                            // enum.
+[u4]1
 [anchr]key_array_member
 
-[anchr]key_string_1
-[dist4]key_string_1_member  // num_bytes
-[u4]5                       // num_elements
-0 1 2 3 4
-[anchr]key_string_1_member
-
-[u4]0 [u4]0 [u1]0 [u1]0 [u1]0  // manual padding for array alignment
-
 [anchr]value_array_ptr
 [dist4]value_array_member   // num_bytes
 [u4]2                       // num_elements
-1 2
+[u4]0x5678                  // Unknown value is not allowed for non-extensible

[yzshen1, 2016/06/02 19:52:28]

Please consider splitting this test into two, one with only an illegal key and
one with only an illegal value. That way, we can be sure that both key and value
are validated.

[tibell, 2016/06/02 23:55:02]

Done.

+                            // enum.
+[u4]1
 [anchr]value_array_member