Convert //cc from scoped_ptr to std::unique_ptr.

cc/scheduler/scheduler_state_machine.h

Index: cc/scheduler/scheduler_state_machine.h
diff --git a/cc/scheduler/scheduler_state_machine.h b/cc/scheduler/scheduler_state_machine.h
index f1872fe62d0e784cdb2565824c01f4d4d8a07034..2d0ee144d196422a57bc8fba33ccd3a9a6c08a07 100644
--- a/cc/scheduler/scheduler_state_machine.h
+++ b/cc/scheduler/scheduler_state_machine.h
@@ -5,10 +5,10 @@
 #ifndef CC_SCHEDULER_SCHEDULER_STATE_MACHINE_H_
 #define CC_SCHEDULER_SCHEDULER_STATE_MACHINE_H_
 
+#include <memory>
 #include <string>
 
 #include "base/macros.h"
-#include "base/memory/scoped_ptr.h"
 #include "cc/base/cc_export.h"
 #include "cc/output/begin_frame_args.h"
 #include "cc/scheduler/commit_earlyout_reason.h"
@@ -129,7 +129,7 @@ class CC_EXPORT SchedulerStateMachine {
   };
   static const char* ActionToString(Action action);
 
-  scoped_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
+  std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
   void AsValueInto(base::trace_event::TracedValue* dict) const;
 
   Action NextAction() const;