Make Sky not crash when run in MojoShell.apk

sky/tools/debugger/prompt/prompt.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 "base/bind.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/application/application_runner_chromium.h"
 #include "mojo/public/c/system/main.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/application_impl.h"
@@ skipping 38 matching lines @@
       url_ = "https://raw.githubusercontent.com/domokit/mojo/master/sky/"
           "examples/home.sky";
     }
   }
 
   virtual bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override {
     connection->ConnectToService(&debugger_);
     std::cout << "Loading " << url_ << std::endl;
     Reload();
+#if !defined(OS_ANDROID)
+    // FIXME: To support device-centric development we need to re-write
+    // prompt.cc to just be a server and have all the command handling move
+    // to python (skydb).  prompt.cc would just run until told to quit.
+    // If we don't comment this out then prompt.cc just quits when run headless
+    // as it immediately recieves EOF which it treats as quit.
     ScheduleWaitForInput();
+#endif
     return true;
   }
 
   bool ExecuteCommand(const std::string& command) {
     if (command == "help" || command == "h") {
       PrintHelp();
       return true;
     }
     if (command == "trace") {
       ToggleTracing();
@@ skipping 85 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(Prompt);
 };
 
 }  // namespace debugger
 }  // namespace sky
 
 MojoResult MojoMain(MojoHandle shell_handle) {
   mojo::ApplicationRunnerChromium runner(new sky::debugger::Prompt);
   return runner.Run(shell_handle);
 }