Add Observatory to sky dart_controller

mojo/dart/embedder/dart_debugger.h

Index: mojo/dart/embedder/dart_debugger.h
diff --git a/mojo/dart/embedder/dart_debugger.h b/mojo/dart/embedder/dart_debugger.h
index fe7ef2d84f31c1cffe796fda4dc6cf9074d5e896..7db7986ad42ad35c841e734d29a473cb61ca712f 100644
--- a/mojo/dart/embedder/dart_debugger.h
+++ b/mojo/dart/embedder/dart_debugger.h
@@ -5,6 +5,9 @@
 #ifndef MOJO_DART_EMBEDDER_DART_DEBUGGER_H_
 #define MOJO_DART_EMBEDDER_DART_DEBUGGER_H_
 
+#include <memory>
+#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"
@@ -60,16 +63,16 @@ class DartDebugger {
 
   static void NotifyIsolate(Dart_Isolate isolate);
 
-  static DartDebuggerIsolate* FindIsolateById(Dart_IsolateId id);
+  static intptr_t FindIsolateIndexById(Dart_IsolateId id);
 
-  static DartDebuggerIsolate* FindIsolateByIdLocked(Dart_IsolateId id);
+  static intptr_t FindIsolateIndexByIdLocked(Dart_IsolateId id);
 
-  static DartDebuggerIsolate* AddIsolate(Dart_IsolateId id);
+  static void AddIsolate(Dart_IsolateId id);
 
   static void RemoveIsolate(Dart_IsolateId id);
 
   static base::Lock* lock_;
-  static std::vector<DartDebuggerIsolate*> isolates_;
+  static std::vector<std::unique_ptr<DartDebuggerIsolate>>* isolates_;
 
   friend class DartDebuggerIsolate;
 };