https://bugs.webkit.org/show_bug.cgi?id=123917

Reviewed by Sam Weinig.

* Shared/API/Cocoa/WKRemoteObjectCoder.mm:
(-[WKRemoteObjectDecoder initWithInterface:rootObjectDictionary:WebKit::]):
Initialize the object stream.

(decodeObjectFromObjectStream):
Check that we're not reading past the end of the stream, then decode the object.

(decodeInvocationArguments):
Decode arguments from the object stream.

(decodeInvocation):
Call decodeInvocationArguments and set up the selector argument.

* Shared/ImmutableArray.h:
(WebKit::ImmutableArray::at):
(WebKit::ImmutableArray::size):
(WebKit::ImmutableArray::entries):
Constify.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@158780 268f45cc-cd09-0410-ab3c-d52691b4dbfc