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 cc3a5da2fb0b66022aee82ae9a554ee70cc04f78..87608e218b11614c5bf493d24d6d2c2919374751 100644
--- a/components/scheduler/child/webthread_base.cc
+++ b/components/scheduler/child/webthread_base.cc
@@ -83,7 +83,9 @@ void WebThreadBase::RunWebThreadIdleTask(
 void WebThreadBase::postIdleTask(const blink::WebTraceLocation& web_location,
                                  IdleTask* idle_task) {
   tracked_objects::Location location(web_location.functionName(),
-                                     web_location.fileName(), -1, nullptr);
+                                     web_location.fileName(),
+                                     web_location.lineNumber(),
+                                     web_location.programCounter());
   GetIdleTaskRunner()->PostIdleTask(
       location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
                            base::Passed(base::WrapUnique(idle_task))));
@@ -93,7 +95,9 @@ void WebThreadBase::postIdleTaskAfterWakeup(
     const blink::WebTraceLocation& web_location,
     IdleTask* idle_task) {
   tracked_objects::Location location(web_location.functionName(),
-                                     web_location.fileName(), -1, nullptr);
+                                     web_location.fileName(),
+                                     web_location.lineNumber(),
+                                     web_location.programCounter());
   GetIdleTaskRunner()->PostIdleTaskAfterWakeup(
       location, base::Bind(&WebThreadBase::RunWebThreadIdleTask,
                            base::Passed(base::WrapUnique(idle_task))));