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

third_party/WebKit/public/platform/WebScheduler.h

 // Copyright 2014 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 WebScheduler_h
 #define WebScheduler_h
 
 #include "WebCommon.h"
 #include "public/platform/WebTaskRunner.h"
 #include "public/platform/WebThread.h"
-#include "public/platform/WebTraceLocation.h"
 #include "public/platform/WebViewScheduler.h"
 
 #include <memory>
 
 namespace blink {
 
+class WebTraceLocation;
 class WebView;
 
 // This class is used to submit tasks and pass other information from Blink to
 // the platform's scheduler.
 class BLINK_PLATFORM_EXPORT WebScheduler {
 public:
     virtual ~WebScheduler() { }
 
     // Called to prevent any more pending tasks from running. Must be called on
     // the associated WebThread.
@@ skipping 72 matching lines @@
 
     void postIdleTask(const WebTraceLocation&, std::unique_ptr<IdleTask>);
     void postNonNestableIdleTask(const WebTraceLocation&, std::unique_ptr<IdleTask>);
     void postIdleTaskAfterWakeup(const WebTraceLocation&, std::unique_ptr<IdleTask>);
 #endif
 };
 
 } // namespace blink
 
 #endif // WebScheduler_h