Reimplement devfs in dart. Implementation now writes to disk.

runtime/vm/service_isolate.cc

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/service_isolate.h"
 
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
-#include "vm/dev_fs.h"
 #include "vm/isolate.h"
 #include "vm/lockers.h"
 #include "vm/message.h"
 #include "vm/message_handler.h"
 #include "vm/native_entry.h"
 #include "vm/native_arguments.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/port.h"
 #include "vm/service.h"
@@ skipping 430 matching lines @@
 };
 
 
 void ServiceIsolate::Run() {
   ASSERT(monitor_ == NULL);
   monitor_ = new Monitor();
   ASSERT(monitor_ != NULL);
   // Grab the isolate create callback here to avoid race conditions with tests
   // that change this after Dart_Initialize returns.
   create_callback_ = Isolate::CreateCallback();
-  if (FLAG_support_service) {
-    DevFS::Init();
-  }
   Dart::thread_pool()->Run(new RunServiceTask());
 }
 
 
 void ServiceIsolate::KillServiceIsolate() {
   if (!FLAG_shutdown) {
     return;
   }
   {
     MonitorLocker ml(monitor_);
@@ skipping 28 matching lines @@
       // the VMService object and set up its shutdown handler in the service
       // isolate's main() function, this case will no longer be possible and
       // can be removed.
       KillServiceIsolate();
     }
   }
   if (server_address_ != NULL) {
     free(server_address_);
     server_address_ = NULL;
   }
-  if (FLAG_support_service) {
-    DevFS::Cleanup();
-  }
 }
 
 
 void ServiceIsolate::BootVmServiceLibrary() {
   Thread* thread = Thread::Current();
   const Library& vmservice_library =
       Library::Handle(Library::LookupLibrary(thread, Symbols::DartVMService()));
   ASSERT(!vmservice_library.IsNull());
   const String& boot_function_name = String::Handle(String::New("boot"));
   const Function& boot_function =
@@ skipping 10 matching lines @@
   }
   ASSERT(port != ILLEGAL_PORT);
   ServiceIsolate::SetServicePort(port);
 }
 
 
 void ServiceIsolate::VisitObjectPointers(ObjectPointerVisitor* visitor) {
 }
 
 }  // namespace dart