Replace scoped_ptr with std::unique_ptr in //media/base.

media/base/wall_clock_time_source_unittest.cc

Index: media/base/wall_clock_time_source_unittest.cc
diff --git a/media/base/wall_clock_time_source_unittest.cc b/media/base/wall_clock_time_source_unittest.cc
index dee7aff51d13272ea3f66236fa6f0e969f48defb..6f8fa3af28fd1ec093629a118d5b2e51834f1e9f 100644
--- a/media/base/wall_clock_time_source_unittest.cc
+++ b/media/base/wall_clock_time_source_unittest.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+#include <memory>
+
 #include "base/macros.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "media/base/wall_clock_time_source.h"
@@ -53,7 +55,7 @@ class WallClockTimeSourceTest : public testing::Test {
 
  protected:
   WallClockTimeSource time_source_;
-  scoped_ptr<base::SimpleTestTickClock> tick_clock_;
+  std::unique_ptr<base::SimpleTestTickClock> tick_clock_;
 
   DISALLOW_COPY_AND_ASSIGN(WallClockTimeSourceTest);
 };