Erik Kay, engineering director at Google, introduces Allo and Duo on stage during the Google I/O 2016 developers conference in Mountain View, California May 18, 2016. REUTERS/Stephen Lam

A woman exits the Viacom Inc. headquarters in New York April 30, 2013. REUTERS/Lucas Jackson/File Photo

Finnish game company Supercell Co-Founder and CEO Ilkka Paananen poses while meeting with the press in the company's headquarters in Helsinki, Finland June 21, 2016. Lehtikuva/Seppo Samuli/via REUTERS

Finnish game company Supercell Co-Founder and CEO Ilkka Paananen meets the press in the company's headquarters in Helsinki, Finland June 21, 2016. Lehtikuva/Seppo Samuli/via REUTERS

Japanese Prime Minister Shinzo Abe speaks during a high-level meeting on addressing large movements of refugees and migrants at the United Nations General Assembly in Manhattan, New York, U.S. September 19, 2016. REUTERS/Carlo Allegri

Erik Kay, engineering director at Google, introduces Allo and Duo on stage during the Google I/O 2016 developers conference in Mountain View, California May 18, 2016. REUTERS/Stephen Lam

Homes are seen for sale in the northwest area of Portland, Oregon March 20, 2014. REUTERS/Steve Dipaola

Traders react while working on the floor of the New York Stock Exchange (NYSE) in New York City, U.S., September 15, 2016. REUTERS/Brendan McDermid