Bug 1043808: Clean up rounding of sizes in MediaPipeline to handle odd sizes correctly r=jhlin a=sylvestre
Bug 1043808: Compile desktop_capture_impl.cc with the rest of desktop_capture r=ted a=sylvestre
Bug 1043808: Don't allow content_analysis to half-initialize on small capture sizes r=pkerr  a=sylvestre
Bug 1043808: remove assertions that video is an even number of pixels r=pkerr a=sylvestre
Bug 1043808: undo temp disable of screen/windowsharing tests a=kwierso