Previously shared_desktop_frame.cc wasn't in primitives target, but it
is used in remoting client on android and the client should depend only
on primitives, but not desktop_capture overall.
BUG=653612
R=nicholss@chromium.org
Review URL: https://codereview.webrtc.org/2436913002 .
Cr-Commit-Position: refs/heads/master@{#14709}