Add prototype accessors to <framelet>.

third_party/WebKit/Source/core/html/HTMLFrameletElement.h

Index: third_party/WebKit/Source/core/html/HTMLFrameletElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLFrameletElement.h b/third_party/WebKit/Source/core/html/HTMLFrameletElement.h
index 8255ef782099f277d06e84cdca08aecf0139747c..c9a6d9eb09897086b5aba3fb7a14fae5fe7e4195 100644
--- a/third_party/WebKit/Source/core/html/HTMLFrameletElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLFrameletElement.h
@@ -41,6 +41,10 @@ public:
     BLINK_EXPORT void setWebLayer(WebLayer*);
     WebLayer* webLayer() { return m_webLayer; }
 
+    WTF::String bytesUsed() const { return WTF::String::number(m_bytesUsed); }
+    WTF::String trackBytesUsed() const { return m_trackBytesUsed ? WTF::String("true") : WTF::String("false"); }
+    void setTrackBytesUsed(const WTF::String& val);
+
     // Node overrides
     bool isFrameletElement() const override { return true; }
 
@@ -59,6 +63,8 @@ private:
     void didNotifySubtreeInsertionsToDocument() final;
 
     WebLayer* m_webLayer;
+    int m_bytesUsed;
+    bool m_trackBytesUsed;
 };
 
 } // namespace blink