Fix up mac test client and simple host for remoting.

base/message_pump_mac.mm

 // Copyright (c) 2008 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 "base/message_pump_mac.h"
 
 #import <AppKit/AppKit.h>
 #import <Foundation/Foundation.h>
 #include <IOKit/IOMessage.h>
 #include <IOKit/pwr_mgt/IOPMLib.h>
@@ skipping 654 matching lines @@
 }
 
 MessagePumpNSApplication::MessagePumpNSApplication()
     : keep_running_(true),
       running_own_loop_(false) {
 }
 
 void MessagePumpNSApplication::DoRun(Delegate* delegate) {
   bool last_running_own_loop_ = running_own_loop_;
 
+  // NSApp must be initialized by calling:
+  // [{some class which implements CrAppProtocol} sharedApplication]
+  // Most likely candidates are CrApplication or BrowserCrApplication.
+  // These can be initialized from C++ code by calling
+  // RegisterCrApp() or RegisterBrowserCrApp().
+  CHECK(NSApp);
+
   if (![NSApp isRunning]) {
     running_own_loop_ = false;
     // NSApplication manages autorelease pools itself when run this way.
     [NSApp run];
   } else {
     running_own_loop_ = true;
     NSDate* distant_future = [NSDate distantFuture];
     while (keep_running_) {
       MessagePumpScopedAutoreleasePool autorelease_pool(this);
       NSEvent* event = [NSApp nextEventMatchingMask:NSAnyEventMask
@@ skipping 73 matching lines @@
 // static
 MessagePump* MessagePumpMac::Create() {
   if ([NSThread isMainThread]) {
     return new MessagePumpNSApplication;
   }
 
   return new MessagePumpNSRunLoop;
 }
 
 }  // namespace base