The return type of GetResponse() has been changed from int to bool a while back.
Fix the return type in unit tests that were still expecting int as the return type.
Also log the response message if there is an error in the http response.
Merged from go/wvgerrit/13783.
bug: 19822500
Change-Id: Ie52df0e19744a847690b788680f59915b0b6b534