Remove about:srcdoc url conversion.

content/public/test/test_frame_navigation_observer.cc

Index: content/public/test/test_frame_navigation_observer.cc
diff --git a/content/public/test/test_frame_navigation_observer.cc b/content/public/test/test_frame_navigation_observer.cc
index e5a19430143f939ecdbe9c60fbccd033db06f137..cc5701072e1d01df5fb89c81f434a5698e2da1e2 100644
--- a/content/public/test/test_frame_navigation_observer.cc
+++ b/content/public/test/test_frame_navigation_observer.cc
@@ -58,8 +58,7 @@ void TestFrameNavigationObserver::WaitForCommit() {
 void TestFrameNavigationObserver::DidStartProvisionalLoadForFrame(
     RenderFrameHost* render_frame_host,
     const GURL& validated_url,
-    bool is_error_page,
-    bool is_iframe_srcdoc) {
+    bool is_error_page) {
   RenderFrameHostImpl* rfh =
       static_cast<RenderFrameHostImpl*>(render_frame_host);
   if (rfh->frame_tree_node()->frame_tree_node_id() == frame_tree_node_id_) {