Make RunApplication() return a MojoResult and TerminateApplication() take one.

mojo/public/cpp/utility/lib/run_loop.cc

 // 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.
 
 #include "mojo/public/cpp/utility/run_loop.h"
 
 #include <assert.h>
 #include <pthread.h>
 
 #include <algorithm>
 #include <vector>
 
 #include "mojo/public/c/system/macros.h"
 #include "mojo/public/cpp/system/time.h"
 #include "mojo/public/cpp/system/wait.h"
 #include "mojo/public/cpp/utility/run_loop_handler.h"
 
 namespace mojo {
 namespace {
 
 const MojoTimeTicks kInvalidTimeTicks = static_cast<MojoTimeTicks>(0);
 
 pthread_key_t g_current_run_loop_key;
 
 // Ensures that the "current run loop" functionality is available (i.e., that we
 // have a TLS slot).
-void EnsureCurrentRunLoopInitialized() {
+void InitializeCurrentRunLoopIfNecessary() {
   static pthread_once_t current_run_loop_key_once = PTHREAD_ONCE_INIT;
   int error = pthread_once(&current_run_loop_key_once, []() {
     int error = pthread_key_create(&g_current_run_loop_key, nullptr);
     MOJO_ALLOW_UNUSED_LOCAL(error);
     assert(!error);
   });
   MOJO_ALLOW_UNUSED_LOCAL(error);
   assert(!error);
 }
 
 void SetCurrentRunLoop(RunLoop* run_loop) {
-  EnsureCurrentRunLoopInitialized();
+  InitializeCurrentRunLoopIfNecessary();
 
   int error = pthread_setspecific(g_current_run_loop_key, run_loop);
   MOJO_ALLOW_UNUSED_LOCAL(error);
   assert(!error);
 }
 
 // State needed for one iteration of WaitMany().
 struct WaitState {
   std::vector<Handle> handles;
   std::vector<MojoHandleSignals> handle_signals;
@@ skipping 14 matching lines @@
 }
 
 RunLoop::~RunLoop() {
   assert(current() == this);
   NotifyHandlers(MOJO_RESULT_ABORTED, IGNORE_DEADLINE);
   SetCurrentRunLoop(nullptr);
 }
 
 // static
 RunLoop* RunLoop::current() {
-  EnsureCurrentRunLoopInitialized();
+  InitializeCurrentRunLoopIfNecessary();
   return static_cast<RunLoop*>(pthread_getspecific(g_current_run_loop_key));
 }
 
 void RunLoop::AddHandler(RunLoopHandler* handler,
                          const Handle& handle,
                          MojoHandleSignals handle_signals,
                          MojoDeadline deadline) {
   assert(current() == this);
   assert(handler);
   assert(handle.is_valid());
@@ skipping 193 matching lines @@
     // std::priority_queue<> puts the least element at the end of the queue. We
     // want the soonest eligible task to be at the head of the queue, so
     // run_times further in the future are considered lesser.
     return run_time > other.run_time;
   }
 
   return sequence_number > other.sequence_number;
 }
 
 }  // namespace mojo