
Fix the build and tidy up a couple things along the way. - Add -std=c++11 to CMakeLists.txt CXX flags. - Add missing include to libwebm_utils.h (<memory>). - Setup CMAKE_CXX_FLAGS properly (allow user override). - Add missing URL for gtest repo to README.libwebm. BUG=https://bugs.chromium.org/p/webm/issues/detail?id=1136 Change-Id: I894729216737ff92f58a7b7601484ba8fba73b25