PlzNavigate: identify same-page browser-initiated navigation.

third_party/WebKit/public/platform/WebURLRequest.h

Index: third_party/WebKit/public/platform/WebURLRequest.h
diff --git a/third_party/WebKit/public/platform/WebURLRequest.h b/third_party/WebKit/public/platform/WebURLRequest.h
index 57c31b622d5c11801b38f8008f5f63f716e66883..84aa69ff411b5fe2604d8ec9fe8eb8abba02870d 100644
--- a/third_party/WebKit/public/platform/WebURLRequest.h
+++ b/third_party/WebKit/public/platform/WebURLRequest.h
@@ -335,6 +335,12 @@ class WebURLRequest {
 
   BLINK_PLATFORM_EXPORT void setNavigationStartTime(double);
 
+  // PlzNavigate: specify that the request was intended to be loaded as a same
+  // document navigation. No network requests should be made and the request
+  // should be dropped if a different document was loaded in the frame
+  // in-between.
+  BLINK_PLATFORM_EXPORT void setIsSameDocumentNavigation(bool);
+
 #if INSIDE_BLINK
   BLINK_PLATFORM_EXPORT ResourceRequest& toMutableResourceRequest();
   BLINK_PLATFORM_EXPORT const ResourceRequest& toResourceRequest() const;