Add Observatory to sky dart_controller

sky/engine/core/script/monitor.h

Index: sky/engine/core/script/monitor.h
diff --git a/mojo/dart/embedder/monitor.h b/sky/engine/core/script/monitor.h
similarity index 85%
copy from mojo/dart/embedder/monitor.h
copy to sky/engine/core/script/monitor.h
index a796bc370f2b3370e27884f9115eec00affd5f72..af784ecce6f0180d44d4a2691b571ffe6e7aa438 100644
--- a/mojo/dart/embedder/monitor.h
+++ b/sky/engine/core/script/monitor.h
@@ -2,14 +2,13 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MOJO_DART_EMBEDDER_MONITOR_H_
-#define MOJO_DART_EMBEDDER_MONITOR_H_
+#ifndef SKY_ENGINE_CORE_SCRIPT_MONITOR_H_
+#define SKY_ENGINE_CORE_SCRIPT_MONITOR_H_
 
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 
-namespace mojo {
-namespace dart {
+namespace blink {
 
 class Monitor {
  public:
@@ -70,8 +69,7 @@ class MonitorLocker {
   DISALLOW_COPY_AND_ASSIGN(MonitorLocker);
 };
 
-}  // namespace dart
-}  // namespace mojo
+}  // namespace blink
 
 
-#endif  // MOJO_DART_EMBEDDER_MONITOR_H_
+#endif  // SKY_ENGINE_CORE_SCRIPT_MONITOR_H_