PlzNavigate: Attempt to fix blink layout tests which fail due to duplicate output from WebFrameClie…

content/shell/renderer/layout_test/blink_test_runner.cc

Index: content/shell/renderer/layout_test/blink_test_runner.cc
diff --git a/content/shell/renderer/layout_test/blink_test_runner.cc b/content/shell/renderer/layout_test/blink_test_runner.cc
index 881cfb73d76f3701922af2e1245b086ed4fd51c5..aeccd01d570a5fa4ffb8bffa61b78a544533544f 100644
--- a/content/shell/renderer/layout_test/blink_test_runner.cc
+++ b/content/shell/renderer/layout_test/blink_test_runner.cc
@@ -747,6 +747,11 @@ void BlinkTestRunner::ForceTextInputStateUpdate(WebFrame* frame) {
   ForceTextInputStateUpdateForRenderFrame(RenderFrame::FromWebFrame(frame));
 }
 
+bool BlinkTestRunner::IsNavigationInitiatedByRenderer(
+    const WebURLRequest& request) {
+  return content::IsNavigationInitiatedByRenderer(request);
+}
+
 bool BlinkTestRunner::AddMediaStreamVideoSourceAndTrack(
     blink::WebMediaStream* stream) {
   DCHECK(stream);