Fix trailing whitespace in .cpp, .h, and .idl files

Source/core/html/HTMLFrameElementBase.h

Index: Source/core/html/HTMLFrameElementBase.h
diff --git a/Source/core/html/HTMLFrameElementBase.h b/Source/core/html/HTMLFrameElementBase.h
index ef09c0ee9c246957bc48cf12bfaab69340721c45..f5c5be94e964b98179e7af7b9257a1153287461c 100644
--- a/Source/core/html/HTMLFrameElementBase.h
+++ b/Source/core/html/HTMLFrameElementBase.h
@@ -35,7 +35,7 @@ public:
     void setLocation(const String&);
 
     virtual ScrollbarMode scrollingMode() const { return m_scrolling; }
-    
+
     int marginWidth() const { return m_marginWidth; }
     int marginHeight() const { return m_marginHeight; }
 
@@ -57,7 +57,7 @@ protected:
 private:
     virtual bool supportsFocus() const;
     virtual void setFocus(bool) OVERRIDE;
-    
+
     virtual bool isURLAttribute(const Attribute&) const OVERRIDE;
     virtual bool isHTMLContentAttribute(const Attribute&) const OVERRIDE;