PlzNavigate: Fix the fast/loader/crash-replacing-location-before-load.html layout test.

third_party/WebKit/Source/core/loader/FrameLoader.cpp

Index: third_party/WebKit/Source/core/loader/FrameLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameLoader.cpp b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
index 1b97f12d7356eb16609dd82bf054464bb0442093..23cfc3127925bb5cc53ff1ba70685395d28f2158 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -864,6 +864,10 @@ void FrameLoader::loadInSameDocument(
   // If we have a provisional request for a different document, a fragment
   // scroll should cancel it.
   detachDocumentLoader(m_provisionalDocumentLoader);
+
+  // PlzNavigate: A fragment scroll should clear ongoing client navigations.
+  clearNavigationHandledByClient();
+
   if (!m_frame->host())
     return;
   saveScrollState();