core/platform: Include wtf files using "wtf/foo.h" form.

Source/core/platform/Supplementable.h

 /*
  * Copyright (C) 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:
  * 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
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef Supplementable_h
 #define Supplementable_h
 
-#include <wtf/Assertions.h>
-#include <wtf/HashMap.h>
-#include <wtf/OwnPtr.h>
-#include <wtf/PassOwnPtr.h>
+#include "wtf/Assertions.h"
+#include "wtf/HashMap.h"
+#include "wtf/OwnPtr.h"
+#include "wtf/PassOwnPtr.h"
 
 #if !ASSERT_DISABLED
-#include <wtf/Threading.h>
+#include "wtf/Threading.h"
 #endif
 
 namespace WebCore {
 
 // What you should know about Supplementable and Supplement
 // ========================================================
 // Supplementable and Supplement instances are meant to be thread local. They
 // should only be accessed from within the thread that created them. The
 // 2 classes are not designed for safe access from another thread. Violating
 // this design assumption can result in memory corruption and unpredictable
@@ skipping 80 matching lines @@
     SupplementMap m_supplements;
 #if !ASSERT_DISABLED
     ThreadIdentifier m_threadId;
 #endif
 };
 
 } // namespace WebCore
 
 #endif // Supplementable_h