Revert "DevTools: Load document (html) content from disk cache in page agent enabling."

Source/core/loader/FrameLoader.cpp

Index: Source/core/loader/FrameLoader.cpp
diff --git a/Source/core/loader/FrameLoader.cpp b/Source/core/loader/FrameLoader.cpp
index af209b0484f9e30d13b6144793653a6916a993ed..f9ac63b279dda900df889b425685309cd7d8048c 100644
--- a/Source/core/loader/FrameLoader.cpp
+++ b/Source/core/loader/FrameLoader.cpp
@@ -1059,14 +1059,6 @@ void FrameLoader::restoreScrollPositionAndViewState()
     }
 }
 
-bool FrameLoader::requestFromHistoryForInspector(ResourceRequestCachePolicy cachePolicy, ResourceRequest* request)
-{
-    if (!m_currentItem)
-        return false;
-    *request = requestFromHistoryItem(m_currentItem.get(), cachePolicy);
-    return true;
-}
-
 void FrameLoader::detachChildren()
 {
     typedef Vector<RefPtr<LocalFrame> > FrameVector;