Ability to get originating view from QWebEngineUrlRequestInfo

  // Returns the associated RenderFrame for a given process. Returns false, if
  // there is no associated RenderFrame. This method does not rely on the
  // request being allocated by the ResourceDispatcherHost, but works for all
  // URLRequests that are associated with a RenderFrame.
  CONTENT_EXPORT static bool GetRenderFrameForRequest(
      const net::URLRequest* request,
      int* render_process_id,
      int* render_frame_id);

  // Returns the associated RenderFrame for a given process. Returns false, if
  // there is no associated RenderFrame. This method does not rely on the
  // request being allocated by the ResourceDispatcherHost, but works for all
  // URLRequests that are associated with a RenderFrame.
  CONTENT_EXPORT static bool GetRenderFrameForRequest(
      const net::URLRequest* request,
      int* render_process_id,
      int* render_frame_id);

  // Returns true if the request originated from a Service Worker.
  CONTENT_EXPORT static bool OriginatedFromServiceWorker(
      const net::URLRequest* request);

  // A callback that returns a pointer to a WebContents. The callback can
  // always be used, but it may return nullptr: if the info used to
  // instantiate the callback can no longer be used to return a WebContents,
  // nullptr will be returned instead.
  // The callback should only run on the UI thread and it should always be
  // non-null.
  using WebContentsGetter = base::Callback<WebContents*(void)>;

  // A callback that returns a frame tree node id . The callback can always
  // be used, but it may return -1 if no id is found. The callback should only
  // run on the UI thread.
  using FrameTreeNodeIdGetter = base::Callback<int(void)>;

  // Returns a callback that returns a pointer to the WebContents this request
  // is associated with, or nullptr if it no longer exists or the request is
  // not associated with a WebContents. The callback should only run on the UI
  // thread.
  // Note: Not all resource requests will be owned by a WebContents. For
  // example, requests made by a ServiceWorker.
  virtual WebContentsGetter GetWebContentsGetterForRequest() const = 0;

  // Returns a callback that returns an int with the frame tree node id
  //   associated with this request, or -1 if it no longer exists. This
  //   callback should only be run on the UI thread.
  // Note: Not all resource requests will be associated with a frame. For
  // example, requests made by a ServiceWorker.
  virtual FrameTreeNodeIdGetter GetFrameTreeNodeIdGetterForRequest() const = 0;

  // Returns the FrameTreeNode ID for this frame. This ID is browser-global and
  // uniquely identifies a frame that hosts content.
  // Note: Returns -1 for all requests except PlzNavigate requests.
  virtual int GetFrameTreeNodeId() const = 0;

  // The IPC route identifier of the RenderFrame.
  // To get a WebContents, use GetWebContentsGetterForRequest instead.
  // TODO(jam): once all navigation and resource requests are sent between
  // frames and RenderView/RenderViewHost aren't involved we can remove this and
  // just use GetRouteID above.
  virtual int GetRenderFrameID() const = 0;

  // Returns false if there is NOT an associated render frame.
  virtual bool GetAssociatedRenderFrame(int* render_process_id,
                                        int* render_frame_id) const = 0;