api,stub:Stabilize part of compression agreed to in the stabilization…

… meeting.

addresses part of grpc#1704

api/src/main/java/io/grpc/CallOptions.java

@@ -138,13 +138,12 @@ public CallOptions withCallCredentials(@Nullable CallCredentials credentials) {
 
   /**
    * Sets the compression to use for the call.  The compressor must be a valid name known in the
-   * {@link CompressorRegistry}.
+   * {@link CompressorRegistry}.  By default, the "gzip" compressor will be available.
    *
    * <p>It is only safe to call this if the server supports the compression format chosen. There is
    * no negotiation performed; if the server does not support the compression chosen, the call will
    * fail.
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
   public CallOptions withCompression(@Nullable String compressorName) {
     Builder builder = toBuilder(this);
     builder.compressorName = compressorName;
@@ -207,7 +206,6 @@ public CallOptions withoutWaitForReady() {
   /**
    * Returns the compressor's name.
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
   @Nullable
   public String getCompressor() {
     return compressorName;

api/src/main/java/io/grpc/ServerCall.java

@@ -189,7 +189,6 @@ public boolean isReady() {
    * encoding has been negotiated, this is a no-op. By default per-message compression is enabled,
    * but may not have any effect if compression is not enabled on the call.
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
   public void setMessageCompression(boolean enabled) {
     // noop
   }
@@ -206,7 +205,6 @@ public void setMessageCompression(boolean enabled) {
    * @param compressor the name of the compressor to use.
    * @throws IllegalArgumentException if the compressor name can not be found.
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
   public void setCompression(String compressor) {
     // noop
   }

stub/src/main/java/io/grpc/stub/AbstractStub.java

@@ -163,14 +163,11 @@ public final S withExecutor(Executor executor) {
   /**
    *  Set's the compressor name to use for the call.  It is the responsibility of the application
    *  to make sure the server supports decoding the compressor picked by the client.  To be clear,
-   *  this is the compressor used by the stub to compress messages to the server.  To get
-   *  compressed responses from the server, set the appropriate {@link io.grpc.DecompressorRegistry}
-   *  on the {@link io.grpc.ManagedChannelBuilder}.
+   *  this is the compressor used by the stub to compress messages to the server.
    *
    * @since 1.0.0
    * @param compressorName the name (e.g. "gzip") of the compressor to use.
    */
-  @ExperimentalApi("https://github.com/grpc/grpc-java/issues/1704")
   public final S withCompression(String compressorName) {
     return build(channel, callOptions.withCompression(compressorName));
   }