Make ExecutionContext aware about how it can return CoreProbeSink

third_party/WebKit/Source/core/dom/ExecutionContext.h

Index: third_party/WebKit/Source/core/dom/ExecutionContext.h
diff --git a/third_party/WebKit/Source/core/dom/ExecutionContext.h b/third_party/WebKit/Source/core/dom/ExecutionContext.h
index 0929c3ecc950be92cf7ef7c869c4fb6d741ef23e..d8b0f5840c73e662183ab4c0cdb9ae4af7ee7584 100644
--- a/third_party/WebKit/Source/core/dom/ExecutionContext.h
+++ b/third_party/WebKit/Source/core/dom/ExecutionContext.h
@@ -43,14 +43,15 @@
 
 namespace blink {
 
-class SuspendableObject;
 class ConsoleMessage;
+class CoreProbeSink;
 class DOMTimerCoordinator;
 class ErrorEvent;
 class EventQueue;
 class EventTarget;
 class ExecutionContextTask;
 class LocalDOMWindow;
+class SuspendableObject;
 class PublicURLManager;
 class SecurityOrigin;
 class ScriptState;
@@ -181,6 +182,8 @@ class CORE_EXPORT ExecutionContext : public ContextLifecycleNotifier,
   void SetReferrerPolicy(ReferrerPolicy);
   virtual ReferrerPolicy GetReferrerPolicy() const { return referrer_policy_; }
 
+  virtual CoreProbeSink* GetProbeSink() { return nullptr; }
+
  protected:
   ExecutionContext();
   virtual ~ExecutionContext();