PlzNavigate: Invoke didStartProvisionalLoad() when the renderer initiates a navigation in startLoad(

components/test_runner/web_frame_test_proxy.h

Index: components/test_runner/web_frame_test_proxy.h
diff --git a/components/test_runner/web_frame_test_proxy.h b/components/test_runner/web_frame_test_proxy.h
index ac444304046335918db5624824178fd29d0a7339..8fd40d0f50d79de0d956c0e0500f2dbcce315712 100644
--- a/components/test_runner/web_frame_test_proxy.h
+++ b/components/test_runner/web_frame_test_proxy.h
@@ -96,9 +96,10 @@ class WebFrameTestProxy : public Base, public WebFrameTestProxyBase {
                             replaces_current_history_item);
   }
 
-  void didStartProvisionalLoad(blink::WebLocalFrame* frame) override {
-    test_client()->didStartProvisionalLoad(frame);
-    Base::didStartProvisionalLoad(frame);
+  void didStartProvisionalLoad(blink::WebLocalFrame* frame,
+                               const blink::WebURLRequest& request) override {
+    test_client()->didStartProvisionalLoad(frame, request);
+    Base::didStartProvisionalLoad(frame, request);
   }
 
   void didReceiveServerRedirectForProvisionalLoad(