Revert of [inspector] move console to builtins

src/isolate.h

Index: src/isolate.h
diff --git a/src/isolate.h b/src/isolate.h
index 29d63ce047af6136605ba62118069f96f2996096..ae8d71b9f8e80f6f63a32ab0b9120838ad55acaf 100644
--- a/src/isolate.h
+++ b/src/isolate.h
@@ -30,10 +30,6 @@
 
 namespace base {
 class RandomNumberGenerator;
-}
-
-namespace debug {
-class ConsoleDelegate;
 }
 
 namespace internal {
@@ -740,11 +736,6 @@
     Throw(*exception, location);
     return MaybeHandle<T>();
   }
-
-  void set_console_delegate(debug::ConsoleDelegate* delegate) {
-    console_delegate_ = delegate;
-  }
-  debug::ConsoleDelegate* console_delegate() { return console_delegate_; }
 
   // Re-throw an exception.  This involves no error reporting since error
   // reporting was handled when the exception was thrown originally.
@@ -1541,8 +1532,6 @@
 
   CancelableTaskManager* cancelable_task_manager_;
 
-  debug::ConsoleDelegate* console_delegate_ = nullptr;
-
   v8::Isolate::AbortOnUncaughtExceptionCallback
       abort_on_uncaught_exception_callback_;