Add cdp support for xpath scrapers (#625)

Co-authored-by: WithoutPants <53250216+WithoutPants@users.noreply.github.com>

vendor/github.com/chromedp/cdproto/target/events.go

@@ -0,0 +1,62 @@
+package target
+
+// Code generated by cdproto-gen. DO NOT EDIT.
+
+// EventAttachedToTarget issued when attached to target because of
+// auto-attach or attachToTarget command.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-attachedToTarget
+type EventAttachedToTarget struct {
+	SessionID          SessionID `json:"sessionId"` // Identifier assigned to the session used to send/receive messages.
+	TargetInfo         *Info     `json:"targetInfo"`
+	WaitingForDebugger bool      `json:"waitingForDebugger"`
+}
+
+// EventDetachedFromTarget issued when detached from target for any reason
+// (including detachFromTarget command). Can be issued multiple times per target
+// if multiple sessions have been attached to it.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-detachedFromTarget
+type EventDetachedFromTarget struct {
+	SessionID SessionID `json:"sessionId"` // Detached session identifier.
+}
+
+// EventReceivedMessageFromTarget notifies about a new protocol message
+// received from the session (as reported in attachedToTarget event).
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-receivedMessageFromTarget
+type EventReceivedMessageFromTarget struct {
+	SessionID SessionID `json:"sessionId"` // Identifier of a session which sends a message.
+	Message   string    `json:"message"`
+}
+
+// EventTargetCreated issued when a possible inspection target is created.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-targetCreated
+type EventTargetCreated struct {
+	TargetInfo *Info `json:"targetInfo"`
+}
+
+// EventTargetDestroyed issued when a target is destroyed.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-targetDestroyed
+type EventTargetDestroyed struct {
+	TargetID ID `json:"targetId"`
+}
+
+// EventTargetCrashed issued when a target has crashed.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-targetCrashed
+type EventTargetCrashed struct {
+	TargetID  ID     `json:"targetId"`
+	Status    string `json:"status"`    // Termination status type.
+	ErrorCode int64  `json:"errorCode"` // Termination error code.
+}
+
+// EventTargetInfoChanged issued when some information about a target has
+// changed. This only happens between targetCreated and targetDestroyed.
+//
+// See: https://chromedevtools.github.io/devtools-protocol/tot/Target#event-targetInfoChanged
+type EventTargetInfoChanged struct {
+	TargetInfo *Info `json:"targetInfo"`
+}