src: update inspector code to match upstream API

PR-URL: #11752
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>

src/inspector_agent.cc

@@ -234,12 +234,15 @@ class ChannelImpl final : public v8_inspector::V8Inspector::Channel {
   explicit ChannelImpl(AgentImpl* agent): agent_(agent) {}
   virtual ~ChannelImpl() {}
  private:
-  void sendProtocolResponse(int callId, const StringView& message) override {
-    sendMessageToFrontend(message);
+  void sendResponse(
+      int callId,
+      std::unique_ptr<v8_inspector::StringBuffer> message) override {
+    sendMessageToFrontend(message->string());
   }
 
-  void sendProtocolNotification(const StringView& message) override {
-    sendMessageToFrontend(message);
+  void sendNotification(
+      std::unique_ptr<v8_inspector::StringBuffer> message) override {
+    sendMessageToFrontend(message->string());
   }
 
   void flushProtocolNotifications() override { }