Remove the partially completed code for remote IsolateMirrors and

runtime/vm/isolate.cc

Index: runtime/vm/isolate.cc
===================================================================
--- runtime/vm/isolate.cc	(revision 8116)
+++ runtime/vm/isolate.cc	(working copy)
@@ -46,6 +46,8 @@
   // Check that it is safe to access this handler.
   void CheckAccess();
 #endif
+  bool IsCurrentIsolate() const;
+
  private:
   Isolate* isolate_;
 };
@@ -120,11 +122,16 @@
 
 #if defined(DEBUG)
 void IsolateMessageHandler::CheckAccess() {
-  ASSERT(isolate_ == Isolate::Current());
+  ASSERT(IsCurrentIsolate());
 }
 #endif
 
 
+bool IsolateMessageHandler::IsCurrentIsolate() const {
+  return (isolate_ == Isolate::Current());
+}
+
+
 #if defined(DEBUG)
 // static
 void BaseIsolate::AssertCurrent(BaseIsolate* isolate) {