Revert of Make WebTraceLocation be an alias of tracked_objects::Location

third_party/WebKit/public/platform/WebTaskRunner.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef WebTaskRunner_h
 #define WebTaskRunner_h
 
 #include "WebCommon.h"
-#include "public/platform/WebTraceLocation.h"
 
 #ifdef INSIDE_BLINK
 #include "wtf/Functional.h"
 #include "wtf/PtrUtil.h"
 #include <memory>
 #endif
 
 namespace blink {
 
+class WebTraceLocation;
+
 // The blink representation of a chromium SingleThreadTaskRunner.
 class BLINK_PLATFORM_EXPORT WebTaskRunner {
 public:
     virtual ~WebTaskRunner() {}
 
     class BLINK_PLATFORM_EXPORT Task {
     public:
         virtual ~Task() { }
         virtual void run() = 0;
     };
@@ skipping 41 matching lines @@
     std::unique_ptr<WebTaskRunner> adoptClone()
     {
         return wrapUnique(clone());
     }
 #endif
 };
 
 } // namespace blink
 
 #endif // WebTaskRunner_h