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

Source/web/ContextMenuClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 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 298 matching lines @@
             data.misspellingHash = marker.hash();
             if (marker.description().length()) {
                 Vector<String> suggestions;
                 marker.description().split('\n', suggestions);
                 data.dictionarySuggestions = suggestions;
             } else if (m_webView->spellCheckClient()) {
                 int misspelledOffset, misspelledLength;
                 m_webView->spellCheckClient()->spellCheck(data.misspelledWord, misspelledOffset, misspelledLength, &data.dictionarySuggestions);
             }
         } else {
-            data.isSpellCheckingEnabled = 
+            data.isSpellCheckingEnabled =
                 m_webView->focusedWebCoreFrame()->editor()->isContinuousSpellCheckingEnabled();
             // Spellchecking might be enabled for the field, but could be disabled on the node.
             if (m_webView->focusedWebCoreFrame()->editor()->isSpellCheckingEnabledInFocusedNode()) {
                 data.misspelledWord = selectMisspelledWord(selectedFrame);
                 if (m_webView->spellCheckClient()) {
                     int misspelledOffset, misspelledLength;
                     m_webView->spellCheckClient()->spellCheck(
                         data.misspelledWord, misspelledOffset, misspelledLength,
                         &data.dictionarySuggestions);
                     if (!misspelledLength)
@@ skipping 73 matching lines @@
         outputItems[i] = subItems[i];
     subMenuItems.swap(outputItems);
 }
 
 void ContextMenuClientImpl::populateCustomMenuItems(const WebCore::ContextMenu* defaultMenu, WebContextMenuData* data)
 {
     populateSubMenuItems(defaultMenu->items(), data->customItems);
 }
 
 } // namespace WebKit