[OpenSearch] Add MediaType for "application/opensearchdescription+xml"

RELNOTES=Add MediaType for "application/opensearchdescription+xml"

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=273816540

Author: chriscallahan

android/guava/src/com/google/common/net/MediaType.java

@@ -594,6 +594,17 @@ private static MediaType addKnownType(MediaType mediaType) {
       createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.spreadsheet");
   public static final MediaType OPENDOCUMENT_TEXT =
       createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.text");
+
+  /**
+   * <a href="https://tools.ietf.org/id/draft-ellermann-opensearch-01.html">OpenSearch</a>
+   * Description files are XML files that describe how a website can be used as a search engine by
+   * consumers (e.g. web browsers).
+   *
+   * @since NEXT
+   */
+  public static final MediaType OPENSEARCH_DESCRIPTION_UTF_8 =
+      createConstantUtf8(APPLICATION_TYPE, "opensearchdescription+xml");
+
   public static final MediaType PDF = createConstant(APPLICATION_TYPE, "pdf");
   public static final MediaType POSTSCRIPT = createConstant(APPLICATION_TYPE, "postscript");
 

guava/src/com/google/common/net/MediaType.java

@@ -594,6 +594,17 @@ private static MediaType addKnownType(MediaType mediaType) {
       createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.spreadsheet");
   public static final MediaType OPENDOCUMENT_TEXT =
       createConstant(APPLICATION_TYPE, "vnd.oasis.opendocument.text");
+
+  /**
+   * <a href="https://tools.ietf.org/id/draft-ellermann-opensearch-01.html">OpenSearch</a>
+   * Description files are XML files that describe how a website can be used as a search engine by
+   * consumers (e.g. web browsers).
+   *
+   * @since NEXT
+   */
+  public static final MediaType OPENSEARCH_DESCRIPTION_UTF_8 =
+      createConstantUtf8(APPLICATION_TYPE, "opensearchdescription+xml");
+
   public static final MediaType PDF = createConstant(APPLICATION_TYPE, "pdf");
   public static final MediaType POSTSCRIPT = createConstant(APPLICATION_TYPE, "postscript");