hg: jdk/sandbox: http-client-branch: verify that send/sendAsync will throw IAE and NPE as specified by HttpRequest.Builder

[daniel.fuchs at oracle.com]

Changeset: 5c2ea761455b
Author:    dfuchs
Date:      2018-03-22 14:45 +0000
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/5c2ea761455b

http-client-branch: verify that send/sendAsync will throw IAE and NPE as specified by HttpRequest.Builder

! src/java.net.http/share/classes/jdk/internal/net/http/HttpRequestBuilderImpl.java
! src/java.net.http/share/classes/jdk/internal/net/http/HttpRequestImpl.java
! src/java.net.http/share/classes/jdk/internal/net/http/ImmutableHeaders.java
! src/java.net.http/share/classes/jdk/internal/net/http/common/Utils.java
! test/jdk/java/net/httpclient/HeadersTest.java
! test/jdk/java/net/httpclient/MethodsTest.java