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

Source/wtf/DateMath.h

 /*
  * Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
  * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Research In Motion Limited. All rights reserved.
  *
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
  * 1.1 (the "License"); you may not use this file except in compliance with
@@ skipping 47 matching lines @@
 namespace WTF {
 
 WTF_EXPORT void initializeDates();
 WTF_EXPORT int equivalentYearForDST(int year);
 
 // Not really math related, but this is currently the only shared place to put these.
 WTF_EXPORT double parseES5DateFromNullTerminatedCharacters(const char* dateString);
 WTF_EXPORT double parseDateFromNullTerminatedCharacters(const char* dateString);
 WTF_EXPORT double parseDateFromNullTerminatedCharacters(const char* dateString, bool& haveTZ, int& offset);
 WTF_EXPORT double timeClip(double);
-// dayOfWeek: [0, 6] 0 being Monday, day: [1, 31], month: [0, 11], year: ex: 2011, hours: [0, 23], minutes: [0, 59], seconds: [0, 59], utcOffset: [-720,720]. 
+// dayOfWeek: [0, 6] 0 being Monday, day: [1, 31], month: [0, 11], year: ex: 2011, hours: [0, 23], minutes: [0, 59], seconds: [0, 59], utcOffset: [-720,720].
 WTF_EXPORT String makeRFC2822DateString(unsigned dayOfWeek, unsigned day, unsigned month, unsigned year, unsigned hours, unsigned minutes, unsigned seconds, int utcOffset);
 
 inline double jsCurrentTime()
 {
     // JavaScript doesn't recognize fractions of a millisecond.
     return floor(WTF::currentTimeMS());
 }
 
 const char* const weekdayName[7] = { "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun" };
 const char* const monthName[12] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" };
@@ skipping 42 matching lines @@
 using WTF::msToDays;
 using WTF::msToMinutes;
 using WTF::msToHours;
 using WTF::secondsPerMinute;
 using WTF::parseDateFromNullTerminatedCharacters;
 using WTF::makeRFC2822DateString;
 using WTF::calculateUTCOffset;
 using WTF::calculateDSTOffset;
 
 #endif // DateMath_h