Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java

Index: third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java
diff --git a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java b/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java
deleted file mode 100644
index cc4ab662846c489b06b88d23ac8868c7d674cc2a..0000000000000000000000000000000000000000
--- a/third_party/protobuf/ruby/src/main/java/com/google/protobuf/jruby/RubyOneofDescriptor.java
+++ /dev/null
@@ -1,124 +0,0 @@
-package com.google.protobuf.jruby;
-
-import com.google.protobuf.DescriptorProtos;
-import com.google.protobuf.Descriptors;
-import org.jruby.Ruby;
-import org.jruby.RubyClass;
-import org.jruby.RubyModule;
-import org.jruby.RubyObject;
-import org.jruby.anno.JRubyClass;
-import org.jruby.anno.JRubyMethod;
-import org.jruby.runtime.Block;
-import org.jruby.runtime.ObjectAllocator;
-import org.jruby.runtime.ThreadContext;
-import org.jruby.runtime.builtin.IRubyObject;
-
-import java.util.*;
-
-@JRubyClass(name = "OneofDescriptor", include = "Enumerable")
-public class RubyOneofDescriptor extends RubyObject {
-
-    public static void createRubyOneofDescriptor(Ruby runtime) {
-        RubyModule protobuf = runtime.getClassFromPath("Google::Protobuf");
-        RubyClass cRubyOneofDescriptor = protobuf.defineClassUnder("OneofDescriptor", runtime.getObject(), new ObjectAllocator() {
-            @Override
-            public IRubyObject allocate(Ruby ruby, RubyClass rubyClass) {
-                return new RubyOneofDescriptor(ruby, rubyClass);
-            }
-        });
-        cRubyOneofDescriptor.defineAnnotatedMethods(RubyOneofDescriptor.class);
-        cRubyOneofDescriptor.includeModule(runtime.getEnumerable());
-    }
-
-    public RubyOneofDescriptor(Ruby ruby, RubyClass rubyClass) {
-        super(ruby, rubyClass);
-    }
-
-    @JRubyMethod
-    public IRubyObject initialize(ThreadContext context) {
-        builder = DescriptorProtos.OneofDescriptorProto.newBuilder();
-        fields = new ArrayList<RubyFieldDescriptor>();
-        return this;
-    }
-
-    /*
-     * call-seq:
-     *     OneofDescriptor.name => name
-     *
-     * Returns the name of this oneof.
-     */
-    @JRubyMethod(name = "name")
-    public IRubyObject getName(ThreadContext context) {
-        return name;
-    }
-
-    /*
-     * call-seq:
-     *     OneofDescriptor.name = name
-     *
-     * Sets a new name for this oneof. The oneof must not have been added to a
-     * message descriptor yet.
-     */
-    @JRubyMethod(name = "name=")
-    public IRubyObject setName(ThreadContext context, IRubyObject name) {
-        this.name = context.runtime.newString(name.asJavaString());
-        this.builder.setName(name.asJavaString());
-        return context.runtime.getNil();
-    }
-
-    /*
-     * call-seq:
-     *     OneofDescriptor.add_field(field) => nil
-     *
-     * Adds a field to this oneof. The field may have been added to this oneof in
-     * the past, or the message to which this oneof belongs (if any), but may not
-     * have already been added to any other oneof or message. Otherwise, an
-     * exception is raised.
-     *
-     * All fields added to the oneof via this method will be automatically added to
-     * the message to which this oneof belongs, if it belongs to one currently, or
-     * else will be added to any message to which the oneof is later added at the
-     * time that it is added.
-     */
-    @JRubyMethod(name = "add_field")
-    public IRubyObject addField(ThreadContext context, IRubyObject obj) {
-        RubyFieldDescriptor fieldDescriptor = (RubyFieldDescriptor) obj;
-        fieldDescriptor.setOneofName(this.name);
-        fields.add(fieldDescriptor);
-        return context.runtime.getNil();
-    }
-
-    /*
-     * call-seq:
-     *     OneofDescriptor.each(&block) => nil
-     *
-     * Iterates through fields in this oneof, yielding to the block on each one.
-     */
-    @JRubyMethod
-    public IRubyObject each(ThreadContext context, Block block) {
-        for (RubyFieldDescriptor field : fields) {
-            block.yieldSpecific(context, field);
-        }
-        return context.runtime.getNil();
-    }
-
-    public DescriptorProtos.OneofDescriptorProto build(int index) {
-        for (RubyFieldDescriptor field: fields) {
-            field.setOneofIndex(index);
-        }
-        return this.builder.build();
-    }
-
-    protected Collection<RubyFieldDescriptor> getFields() {
-        return fields;
-    }
-
-    protected Descriptors.OneofDescriptor getOneofDescriptor() {
-        RubyFieldDescriptor fieldDescriptor = fields.get(0);
-        return fieldDescriptor.getFieldDef().getContainingOneof();
-    }
-
-    private IRubyObject name;
-    private DescriptorProtos.OneofDescriptorProto.Builder builder;
-    private List<RubyFieldDescriptor> fields;
-}