PlzNavigate: Invoke didFailProvisionalLoad() in the renderer when a navigation request is cancelled…

content/common/frame_messages.h

Index: content/common/frame_messages.h
diff --git a/content/common/frame_messages.h b/content/common/frame_messages.h
index 872b38ca9f664c792dca42ababbd5c3d98f889a0..95ab5523eadc593ea384fbcdd2410481fdb7affc 100644
--- a/content/common/frame_messages.h
+++ b/content/common/frame_messages.h
@@ -802,6 +802,12 @@ IPC_MESSAGE_ROUTED1(FrameMsg_PostMessageEvent, FrameMsg_PostMessage_Params)
 // Tells the RenderFrame to clear the focused element (if any).
 IPC_MESSAGE_ROUTED0(FrameMsg_ClearFocusedElement)
 
+// PlzNavigate
+// Tells the renderer that the navigation request was aborted.
+IPC_MESSAGE_ROUTED2(FrameMsg_AbortNavigationRequest,
+                    GURL /* url */,
+                    int /* error code */)
+
 #if defined(OS_ANDROID)
 // Request the distance to the nearest find result in a frame from the point at
 // (x, y), defined in fractions of the content document's width and height. The