Fix java bindings with array of maps.

mojo/public/tools/bindings/generators/java_templates/struct_definition.tmpl

 {% from "constant_definition.tmpl" import constant_def %}
 {% from "enum_definition.tmpl" import enum_def %}
 
 {%- macro inequality(kind, v1, v2) -%}
 {%-   if kind|is_reference_kind -%}
 {%-     if kind|is_array_kind -%}
 {%-       if kind.kind|is_reference_kind -%}
 !java.util.Arrays.deepEquals({{v1}}, {{v2}})
 {%-       else -%}
 !java.util.Arrays.equals({{v1}}, {{v2}})
@@ skipping 124 matching lines @@
 {%   elif field.kind|is_handle %}
         {{field|name}} = org.chromium.mojo.system.InvalidHandle.INSTANCE;
 {%   endif %}
 {% endfor %}
     }
 
     public static {{struct|name}} deserialize(org.chromium.mojo.bindings.Message message) {
         return decode(new org.chromium.mojo.bindings.Decoder(message));
     }
 
+    @SuppressWarnings("unchecked")
     public static {{struct|name}} decode(org.chromium.mojo.bindings.Decoder decoder0) {
         if (decoder0 == null) {
             return null;
         }
         {{struct|name}} result = new {{struct|name}}();
 {% if not struct.bytes %}
         decoder0.readDataHeader();
 {% else %}
         DataHeader mainDataHeader = decoder0.readDataHeader();
 {% endif %}
 {% for byte in struct.bytes %}
 {%   for packed_field in byte.packed_fields %}
         if (mainDataHeader.numFields > {{packed_field.ordinal}}) {
             {{decode('result.' ~ packed_field.field|name, packed_field.field.kind, 8+packed_field.offset, packed_field.bit)|indent(12)}}
         }
 {%   endfor %}
 {% endfor %}
         return result;
     }
 
+    @SuppressWarnings("unchecked")
     @Override
     protected final void encode(org.chromium.mojo.bindings.Encoder encoder) {
 {% if not struct.bytes %}
         encoder.getEncoderAtDataOffset(DEFAULT_STRUCT_INFO);
 {% else %}
         org.chromium.mojo.bindings.Encoder encoder0 = encoder.getEncoderAtDataOffset(DEFAULT_STRUCT_INFO);
 {% endif %}
 {% for byte in struct.bytes %}
 {%   for packed_field in byte.packed_fields %}
         {{encode(packed_field.field|name, packed_field.field.kind, 8+packed_field.offset, packed_field.bit)|indent(8)}}
@@ skipping 29 matching lines @@
     public int hashCode() {
         final int prime = 31;
         int result = prime + getClass().hashCode();
 {% for field in struct.fields %}
         result = prime * result + {{hash(field.kind, field|name)}};
 {% endfor %}
         return result;
     }
 }
 {% endmacro %}