Fix a bunch of IWYU violators that don't include scoped_ptr.h

cc/scheduler/delay_based_time_source.h

 // Copyright 2011 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 CC_SCHEDULER_DELAY_BASED_TIME_SOURCE_H_
 #define CC_SCHEDULER_DELAY_BASED_TIME_SOURCE_H_
 
 #include <string>
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "base/values.h"
 #include "cc/base/cc_export.h"
 
 namespace base {
 namespace trace_event {
 class TracedValue;
 }
 class SingleThreadTaskRunner;
 }
@@ skipping 66 matching lines @@
   base::SingleThreadTaskRunner* task_runner_;
 
   base::WeakPtrFactory<DelayBasedTimeSource> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(DelayBasedTimeSource);
 };
 
 }  // namespace cc
 
 #endif  // CC_SCHEDULER_DELAY_BASED_TIME_SOURCE_H_