chore: implement GetSurveyAPIKey

Refs: https://chromium-review.googlesource.com/c/chromium/src/+/2362182

shell/browser/ui/inspectable_web_contents.h

@@ -151,6 +151,7 @@ class InspectableWebContents
   void RecordPerformanceHistogram(const std::string& name,
                                   double duration) override {}
   void RecordUserMetricsAction(const std::string& name) override {}
+  void GetSurveyAPIKey(const DispatchCallback& callback) override {}
 
   // content::DevToolsFrontendHostDelegate:
   void HandleMessageFromDevToolsFrontend(const std::string& message);