ManagedChannelBuilder doesn't have maxMessageSize

[ejona86]

This makes it more annoying to override the maxMessageSize, because you have to know which implementation you are using.

Note that if you specify the actual implementation, this is easy, but the problem is needing to specify the implementation.

Instead of:

ManagedChannelBuilder.forTarget(...)
   .maxMessageSize(SIZE)
   .build();

You are forced to do:

NettyChannelBuilder.forTarget(...)
   .maxMessageSize(SIZE)
   .build();

[ejona86]

This is slightly tricky since things like InProcess transport doesn't support maxMessageSize (infinite is always allowed). We can add support to InProcess transport, although that comes at a performance cost since today the messages aren't generally serialized. The other option is for it to just ignore the setting.

[ejona86]

Fixed by #2382