Move //mojo/{public, edk} underneath //third_party

mojo/public/c/README.md

-Mojo Public C API
-=================
-
-This directory contains C language bindings for the Mojo Public API.
-
-Environment
------------
-
-The environment/ subdirectory defines some common things that, while not part of
-the system API, may be required for GLES2 (for example). These are things that a
-Mojo application may be required to provide to the GLES2 (for example) library
-in order to use it. (However, the Mojo application may implement these things as
-it sees fit.)
-
-GLES2
------
-
-The gles2/ subdirectory defines the GLES2 C API that's available to Mojo
-applications. To use GLES2, Mojo applications must link against a dynamic
-library (the exact mechanism being platform-dependent) and use the header files
-in this directory as well as the standard Khronos GLES2 header files.
-
-The reason for this, rather than providing GLES2 using the standard Mojo IPC
-mechanism, is performance: The protocol (and transport mechanisms) used to
-communicate with the Mojo GLES2 service is not stable nor "public" (mainly for
-performance reasons), and using the dynamic library shields the application from
-changes to the underlying system.
-
-System
-------
-
-The system/ subdirectory provides definitions of the basic low-level API used by
-all Mojo applications (whether directly or indirectly). These consist primarily
-of the IPC primitives used to communicate with Mojo services.
-
-Though the message protocol is stable, the implementation of the transport is
-not, and access to the IPC mechanisms must be via the primitives defined in this
-directory.
-
-Test Support
-------------
-
-This directory contains a C API for running tests. This API is only available
-under special, specific test conditions. It is not meant for general use by Mojo
-applications.