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

components/scheduler/child/webthread_base.cc

Index: components/scheduler/child/webthread_base.cc
diff --git a/components/scheduler/child/webthread_base.cc b/components/scheduler/child/webthread_base.cc
index cf2ea07635c46e8201f07a54549c3569df97a759..cc3a5da2fb0b66022aee82ae9a554ee70cc04f78 100644
--- a/components/scheduler/child/webthread_base.cc
+++ b/components/scheduler/child/webthread_base.cc
@@ -80,21 +80,23 @@
   idle_task->run((deadline - base::TimeTicks()).InSecondsF());
 }
 
-void WebThreadBase::postIdleTask(const blink::WebTraceLocation& location,
+void WebThreadBase::postIdleTask(const blink::WebTraceLocation& web_location,
                                  IdleTask* idle_task) {
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
   GetIdleTaskRunner()->PostIdleTask(
-      location,
-      base::Bind(&WebThreadBase::RunWebThreadIdleTask,
-                 base::Passed(base::WrapUnique(idle_task))));
+      location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
+                           base::Passed(base::WrapUnique(idle_task))));
 }
 
 void WebThreadBase::postIdleTaskAfterWakeup(
-    const blink::WebTraceLocation& location,
+    const blink::WebTraceLocation& web_location,
     IdleTask* idle_task) {
+  tracked_objects::Location location(web_location.functionName(),
+                                     web_location.fileName(), -1, nullptr);
   GetIdleTaskRunner()->PostIdleTaskAfterWakeup(
-      location,
-      base::Bind(&WebThreadBase::RunWebThreadIdleTask,
-                 base::Passed(base::WrapUnique(idle_task))));
+      location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
+                           base::Passed(base::WrapUnique(idle_task))));
 }
 
 bool WebThreadBase::isCurrentThread() const {