Facebook Chief Operating Officer Sheryl Sandberg delivers a speech during the Global Women's Leadership Summit in Tokyo on Tuesday, July 2, 2013. (AP Photo/Shizuo Kambayashi)

Photo by: Shizuo Kambayashi

Facebook Chief Operating Officer Sheryl Sandberg delivers a speech during the Global Women's Leadership Summit in Tokyo on Tuesday, July 2, 2013. (AP Photo/Shizuo Kambayashi)