Add Observatory to sky dart_controller

sky/engine/core/script/dart_debugger.cc

 // Copyright 2015 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 <vector>
 
 #include "dart/runtime/include/dart_api.h"
 #include "dart/runtime/include/dart_debugger_api.h"
 #include "dart/runtime/include/dart_native_api.h"
-#include "mojo/dart/embedder/dart_debugger.h"
+#include "dart_debugger.h"
 
-namespace mojo {
-namespace dart {
+namespace blink {
 
 void DartDebuggerIsolate::MessageLoop() {
   MonitorLocker ml(&monitor_);
   // Request notification on isolate messages.  This allows us to
   // respond to vm service messages while at breakpoint.
   Dart_SetMessageNotifyCallback(DartDebugger::NotifyIsolate);
   while (true) {
     // Handle all available vm service messages, up to a resume
     // request.
     bool resume = false;
@@ skipping 110 matching lines @@
       isolates_.erase(isolates_.begin() + i);
       return;
     }
   }
   NOTREACHED();
 }
 
 base::Lock* DartDebugger::lock_ = nullptr;
 std::vector<DartDebuggerIsolate*> DartDebugger::isolates_;
 
-}  // namespace apps
-}  // namespace mojo
+}  // namespace blink