Speculative fix for null m_documentLoader in restoreScrollPositionAndViewState.

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 d0c6f2176eeb22d6831d589ca52935a4299cf71f..444196e00ed022f10692d3adc6e613bfc7647bc0 100644
--- a/third_party/WebKit/Source/core/loader/FrameLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameLoader.cpp
@@ -1124,6 +1124,9 @@ void FrameLoader::restoreScrollPositionAndViewState()
     if (!needsHistoryItemRestore(m_loadType))
         return;
 
+    if (!documentLoader())

[Nate Chapin, 2015/12/03 17:49:13]

Maybe add this to the first if() statement? It's similar in concept to the
m_frame->page() || !view check.

[skobes, 2015/12/03 18:40:32]

Done.

+        return;
+
     bool shouldRestoreScroll = m_currentItem->scrollRestorationType() != ScrollRestorationManual;
     bool shouldRestoreScale = m_currentItem->pageScaleFactor();