Make the fuchsia mojo/public repo the source of truth.

mojo/public/python/mojo_system_impl.pyx

-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# distutils language = c++
-
-cimport c_async_waiter
-cimport c_environment
-cimport c_export  # needed so the init function gets exported
-cimport c_thunks
-
-
-from libc.stdint cimport uintptr_t
-
-
-def SetSystemThunks(system_thunks_as_object):
-  """Bind the basic Mojo Core functions.
-  """
-  cdef const c_thunks.MojoSystemThunks* system_thunks = (
-      <const c_thunks.MojoSystemThunks*><uintptr_t>system_thunks_as_object)
-  c_thunks.MojoSetSystemThunks(system_thunks)
-
-
-cdef class RunLoop(object):
-  """RunLoop to use when using asynchronous operations on handles."""
-
-  cdef c_environment.CRunLoop* c_run_loop
-
-  def __init__(self):
-    assert not <uintptr_t>(c_environment.CRunLoopCurrent())
-    self.c_run_loop = new c_environment.CRunLoop()
-
-  def __dealloc__(self):
-    del self.c_run_loop
-
-  def Run(self):
-    """Run the runloop until Quit is called."""
-    self.c_run_loop.Run()
-
-  def RunUntilIdle(self):
-    """Run the runloop until Quit is called or no operation is waiting."""
-    self.c_run_loop.RunUntilIdle()
-
-  def Quit(self):
-    """Quit the runloop."""
-    self.c_run_loop.Quit()
-
-  def PostDelayedTask(self, runnable, delay=0):
-    """
-    Post a task on the runloop. This must be called from the thread owning the
-    runloop.
-    """
-    cdef c_environment.CClosure closure = c_environment.BuildClosure(runnable)
-    self.c_run_loop.PostDelayedTask(closure, delay)
-
-
-# We use a wrapping class to be able to call the C++ class PythonAsyncWaiter
-# across module boundaries.
-cdef class AsyncWaiter(object):
-  cdef c_async_waiter.PythonAsyncWaiter* _c_async_waiter
-
-  def __init__(self):
-    self._c_async_waiter = c_environment.NewAsyncWaiter()
-
-  def __dealloc__(self):
-    del self._c_async_waiter
-
-  def AsyncWait(self, handle, signals, deadline, callback):
-    return self._c_async_waiter.AsyncWait(handle, signals, deadline, callback)
-
-  def CancelWait(self, wait_id):
-    self._c_async_waiter.CancelWait(wait_id)