Persist prompt/block download limiter state on renderer-initiated loads.

content/public/browser/navigation_handle.h

Index: content/public/browser/navigation_handle.h
diff --git a/content/public/browser/navigation_handle.h b/content/public/browser/navigation_handle.h
index 124ef31b0ab042f9db51b1a4a4257c009f8a9dff..0f7c7a89985051183dc5d9220b9b52260d94cc2e 100644
--- a/content/public/browser/navigation_handle.h
+++ b/content/public/browser/navigation_handle.h
@@ -47,6 +47,14 @@ class CONTENT_EXPORT NavigationHandle {
   // of the main frame. This remains constant over the navigation lifetime.
   virtual bool IsParentMainFrame() = 0;
 
+  // Whether the navigation was initated by the renderer process. Examples of
+  // renderer-initiated navigations include:
+  //  * <a> link click
+  //  * changing window.location.href
+  //  * redirect via the <meta http-equiv="refresh"> tag
+  //  * using window.history.pushState
+  virtual bool IsRendererInitiated() = 0;
+
   // Whether the navigation is synchronous or not. Examples of synchronous
   // navigations are:
   // * reference fragment navigations