Make base a static ibrary

This saves a nontrivial amount of space for some of the smaller targets in release builds. See the comment added to the base target for more.

Remove libmojo_sdk. This is a complete static library that depended on base. Since base is now a static library, this dependency is not allowed. The mojo team says this target is no longer needed, so it was deleted.

Review URL: https://codereview.chromium.org/1528233002

Cr-Commit-Position: refs/heads/master@{#365955}
10 files changed