PlzNavigate: properly execute BeforeUnload on renderer initiated navigations

third_party/WebKit/public/platform/WebURLRequest.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 279 matching lines @@
     BLINK_PLATFORM_EXPORT Priority getPriority() const;
     BLINK_PLATFORM_EXPORT void setPriority(Priority);
 
     // PlzNavigate: whether the FrameLoader should try to send the request to
     // the browser (if browser-side navigations are enabled).
     // Note: WebURLRequests created by RenderFrameImpl::OnCommitNavigation must
     // not be sent to the browser.
     BLINK_PLATFORM_EXPORT bool checkForBrowserSideNavigation() const;
     BLINK_PLATFORM_EXPORT void setCheckForBrowserSideNavigation(bool);
 
+    // PlzNavigate: whether the loader should bypass executing the BeforeUnload
+    // event when loading this request. This is set to true when committing
+    // urls that have already made a network request, as the BeforeUnload event
+    // has already run before the network request was made.
+    BLINK_PLATFORM_EXPORT void setBypassBeforeUnload(bool);
+
     // This is used to report navigation metrics starting from the UI action
     // that triggered the navigation (which can be different from the navigation
     // start time used in the Navigation Timing API).
     BLINK_PLATFORM_EXPORT double uiStartTime() const;
     BLINK_PLATFORM_EXPORT void setUiStartTime(double);
     BLINK_PLATFORM_EXPORT WebURLRequest::InputToLoadPerfMetricReportPolicy inputPerfMetricReportPolicy() const;
     BLINK_PLATFORM_EXPORT void setInputPerfMetricReportPolicy(WebURLRequest::InputToLoadPerfMetricReportPolicy);
 
     // https://mikewest.github.io/cors-rfc1918/#external-request
     BLINK_PLATFORM_EXPORT bool isExternalRequest() const;
 
 #if INSIDE_BLINK
     BLINK_PLATFORM_EXPORT ResourceRequest& toMutableResourceRequest();
     BLINK_PLATFORM_EXPORT const ResourceRequest& toResourceRequest() const;
 #endif
 
 protected:
     BLINK_PLATFORM_EXPORT void assign(WebURLRequestPrivate*);
 
 private:
     WebURLRequestPrivate* m_private;
 };
 
 } // namespace blink
 
 #endif