srand() and its friends are supposed to be discouraged since C++14. This CL replaces srand() with new C++11 random libraries. Change-Id: If2c25158c88c674cd3fd6d891559a9e32283e19e
Change-Id: If97b9e9cc3bbaa4c7877991c11d7935626268ca3
Bug: 13799846 Bug: 10701902 Bug: 9505397 Change-Id: I6c3f84f035f2310f2f7dfec4432ebdb6e50d5df0