Add an unimplemented history API to WebView

public/web/WebView.h

Index: public/web/WebView.h
diff --git a/public/web/WebView.h b/public/web/WebView.h
index e35e319e4778e2ef42e332590cbb50e9c5861840..f60ce368f5f05ee8a04a57f2fe948d3a0b600609 100644
--- a/public/web/WebView.h
+++ b/public/web/WebView.h
@@ -35,6 +35,8 @@
 #include "../platform/WebString.h"
 #include "../platform/WebVector.h"
 #include "WebDragOperation.h"
+#include "WebHistoryCommitType.h"
+#include "WebHistoryItem.h"
 #include "WebPageVisibilityState.h"
 #include "WebWidget.h"
 
@@ -494,6 +496,14 @@ public:
     virtual void addPageOverlay(WebPageOverlay*, int /*z-order*/) = 0;
     virtual void removePageOverlay(WebPageOverlay*) = 0;
 
+
+    // History (TEMPORARY) --------------------------------------------------
+    // These are shims to enable blink's HistoryController to move to content/.
+    virtual void updateForCommit(WebFrame*, const WebHistoryItem&, WebHistoryCommitType, bool navigationWithinPage) { }
+    virtual WebHistoryItem itemForNewChildFrame(WebFrame*) const { return WebHistoryItem(); }
+    virtual void removeChildrenForRedirect(WebFrame*) { }
+
+
     // Testing functionality for TestRunner ---------------------------------
 
 protected: