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

content/browser/media/session/media_session_delegate_android_browsertest.cc

Index: content/browser/media/session/media_session_delegate_android_browsertest.cc
diff --git a/content/browser/media/session/media_session_delegate_android_browsertest.cc b/content/browser/media/session/media_session_delegate_android_browsertest.cc
index 263d58328af0f34b4096a7bc3defd1075310e0ea..440092f4e1ddafffb626f9130d3c9751dc21d3f8 100644
--- a/content/browser/media/session/media_session_delegate_android_browsertest.cc
+++ b/content/browser/media/session/media_session_delegate_android_browsertest.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/command_line.h"
 #include "base/run_loop.h"
 #include "content/browser/media/session/media_session.h"
@@ -27,7 +29,7 @@ class MediaSessionDelegateAndroidBrowserTest : public ContentBrowserTest {};
 
 IN_PROC_BROWSER_TEST_F(MediaSessionDelegateAndroidBrowserTest,
                        MAYBE_OnAudioFocusChangeAfterDtorCrash) {
-  scoped_ptr<MockMediaSessionObserver> media_session_observer(
+  std::unique_ptr<MockMediaSessionObserver> media_session_observer(
       new MockMediaSessionObserver);
 
   MediaSession* media_session = MediaSession::Get(shell()->web_contents());