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

Source/modules/webdatabase/Database.cpp

 /*
  * Copyright (C) 2007, 2008, 2013 Apple 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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 84 matching lines @@
         m_context.clear();
     }
 
     virtual bool isCleanupTask() const { return true; }
 
 private:
     DerefContextTask(PassRefPtr<ScriptExecutionContext> context)
         : m_context(context)
     {
     }
-    
+
     RefPtr<ScriptExecutionContext> m_context;
 };
 
 Database::~Database()
 {
     // The reference to the ScriptExecutionContext needs to be cleared on the JavaScript thread.  If we're on that thread already, we can just let the RefPtr's destruction do the dereffing.
     if (!m_scriptExecutionContext->isContextThread()) {
         // Grab a pointer to the script execution here because we're releasing it when we pass it to
         // DerefContextTask::create.
         ScriptExecutionContext* scriptExecutionContext = m_scriptExecutionContext.get();
-        
+
         scriptExecutionContext->postTask(DerefContextTask::create(m_scriptExecutionContext.release()));
     }
 }
 
 Database* Database::from(DatabaseBackend* backend)
 {
     return static_cast<Database*>(backend->m_frontend);
 }
 
 PassRefPtr<DatabaseBackend> Database::backend()
@@ skipping 159 matching lines @@
     backend()->reportStartTransactionResult(errorSite, webSqlErrorCode, sqliteErrorCode);
 }
 
 void Database::reportCommitTransactionResult(int errorSite, int webSqlErrorCode, int sqliteErrorCode)
 {
     backend()->reportCommitTransactionResult(errorSite, webSqlErrorCode, sqliteErrorCode);
 }
 
 
 } // namespace WebCore