PlzNavigate: Eliminate test_runner bailing out of layout tests too early

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 82a193c97a89cba95723e096e3e5262afb4567da..f072f9ac6b55b18ebdf2f35a56894794ad316ea4 100644
--- a/components/test_runner/web_frame_test_proxy.h
+++ b/components/test_runner/web_frame_test_proxy.h
@@ -163,6 +163,16 @@ class WebFrameTestProxy : public Base, public WebFrameTestProxyBase {
     test_client()->didFinishLoad(frame);
   }
 
+  void didNavigateWithinPage(blink::WebLocalFrame* frame,
+                             const blink::WebHistoryItem& history_item,
+                             blink::WebHistoryCommitType commit_type,
+                             bool content_initiated) override {
+    Base::didNavigateWithinPage(frame, history_item, commit_type,
+                                content_initiated);
+    test_client()->didNavigateWithinPage(frame, history_item, commit_type,
+                                         content_initiated);
+  }
+
   void didStopLoading() override {
     Base::didStopLoading();
     test_client()->didStopLoading();
@@ -263,6 +273,11 @@ class WebFrameTestProxy : public Base, public WebFrameTestProxyBase {
     return Base::decidePolicyForNavigation(info);
   }
 
+  void didStartLoading(bool to_different_document) override {
+    Base::didStartLoading(to_different_document);
+    test_client()->didStartLoading(to_different_document);
+  }
+
   void willStartUsingPeerConnectionHandler(
       blink::WebRTCPeerConnectionHandler* handler) override {
     // RenderFrameImpl::willStartUsingPeerConnectionHandler can not be mocked.