Fix for topEmbed bug 93027 r=pollmann sr=darin

docshell/shistory/public/nsISHEntry.idl

@@ -74,6 +74,9 @@ attribute unsigned long ID;
 /** attribute to set and get the cache key for the entry */
 attribute nsISupports cacheKey;
 
+/** attribute to indicate whether layoutHistoryState should be saved */
+attribute boolean saveHistoryStateFlag;
+
 /** Additional ways to create an entry */
 void create(in nsIURI aURI, in wstring aTitle, in nsIDOMDocument aDocument,
 			         in nsIInputStream aInputStream, in nsILayoutHistoryState aHistoryLayoutState,

docshell/shistory/src/nsSHEntry.cpp

@@ -223,6 +223,20 @@ NS_IMETHODIMP nsSHEntry::SetCacheKey(nsISupports* aCacheKey)
    return NS_OK;
 }
 
+NS_IMETHODIMP nsSHEntry::GetSaveHistoryStateFlag(PRBool * aFlag)
+{
+   NS_ENSURE_ARG_POINTER(aFlag);
+   
+   *aFlag = mSaveHistoryState;
+   return NS_OK;
+}
+
+NS_IMETHODIMP nsSHEntry::SetSaveHistoryStateFlag(PRBool  aFlag)
+{
+   mSaveHistoryState = aFlag;
+   return NS_OK;
+}
+
 nsresult
 nsSHEntry::Create(nsIURI * aURI, const PRUnichar * aTitle, nsIDOMDocument * aDOMDocument,
 			         nsIInputStream * aInputStream, nsILayoutHistoryState * aHistoryLayoutState,
@@ -243,6 +257,9 @@ nsSHEntry::Create(nsIURI * aURI, const PRUnichar * aTitle, nsIDOMDocument * aDOM
   // all subframe navigations, sets the flag to true.
   SetIsSubFrame(PR_FALSE);
 
+  // By default we save HistoryLayoutState
+  SetSaveHistoryStateFlag(PR_TRUE);
+
 	return NS_OK;
 	
 }

docshell/shistory/src/nsSHEntry.h

@@ -65,6 +65,7 @@ private:
 	PRUint32                        mLoadType;  
 	PRUint32                        mID;
   PRBool                          mIsFrameNavigation;
+  PRBool                          mSaveHistoryState;
   nsCOMPtr<nsISupports>           mCacheKey;
   nsISHEntry *                    mParent;  // weak reference
 };