Fix trailing whitespace in .cpp, .h, and .idl files (ex. Source/core)

Source/web/WebFontImpl.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 135 matching lines @@
 }
 
 WebRect WebFontImpl::estimateTextBounds(const WebTextRun& run, const WebFloatPoint& leftBaseline) const
 {
     FontCachePurgePreventer fontCachePurgePreventer;
     int totalWidth = m_font.width(run, 0);
     const WebCore::FontMetrics& fontMetrics = m_font.fontMetrics();
     return WebRect(leftBaseline.x - (fontMetrics.ascent() + fontMetrics.descent()) / 2,
                    leftBaseline.y - fontMetrics.ascent() - fontMetrics.lineGap(),
                    totalWidth + fontMetrics.ascent() + fontMetrics.descent(),
-                   fontMetrics.lineSpacing()); 
+                   fontMetrics.lineSpacing());
 }
 
 } // namespace WebKit