Convert //content from scoped_ptr to std::unique_ptr

content/shell/browser/layout_test/layout_test_browser_context.h

Index: content/shell/browser/layout_test/layout_test_browser_context.h
diff --git a/content/shell/browser/layout_test/layout_test_browser_context.h b/content/shell/browser/layout_test/layout_test_browser_context.h
index 3be2d6705c55b9e6eaf433678ba605fa3d6f2b34..0d6fcebdbb60c5203088834a0e04ea2247ac5c2a 100644
--- a/content/shell/browser/layout_test/layout_test_browser_context.h
+++ b/content/shell/browser/layout_test/layout_test_browser_context.h
@@ -41,9 +41,9 @@ class LayoutTestBrowserContext : public ShellBrowserContext {
       URLRequestInterceptorScopedVector request_interceptors) override;
 
  private:
-  scoped_ptr<LayoutTestPushMessagingService> push_messaging_service_;
-  scoped_ptr<PermissionManager> permission_manager_;
-  scoped_ptr<BackgroundSyncController> background_sync_controller_;
+  std::unique_ptr<LayoutTestPushMessagingService> push_messaging_service_;
+  std::unique_ptr<PermissionManager> permission_manager_;
+  std::unique_ptr<BackgroundSyncController> background_sync_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(LayoutTestBrowserContext);
 };