Rewrite references to "wtf/" to "platform/wtf/" in the rest of core/.

third_party/WebKit/Source/core/timing/PerformanceMark.h

 /*
  * Copyright (C) 2012 Intel 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
@@ skipping 10 matching lines @@
  * 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 PerformanceMark_h
 #define PerformanceMark_h
 
 #include "core/timing/PerformanceEntry.h"
 #include "platform/heap/Handle.h"
-#include "wtf/text/WTFString.h"
+#include "platform/wtf/text/WTFString.h"
 
 namespace blink {
 
 class CORE_EXPORT PerformanceMark final : public PerformanceEntry {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static PerformanceMark* Create(const String& name, double start_time) {
     return new PerformanceMark(name, start_time);
   }
 
   DEFINE_INLINE_VIRTUAL_TRACE() { PerformanceEntry::Trace(visitor); }
 
  private:
   PerformanceMark(const String& name, double start_time)
       : PerformanceEntry(name, "mark", start_time, start_time) {}
 
   ~PerformanceMark() override {}
 };
 
 }  // namespace blink
 
 #endif  // PerformanceMark_h