Convert //content from scoped_ptr to std::unique_ptr

content/public/test/browser_test_base.h

Index: content/public/test/browser_test_base.h
diff --git a/content/public/test/browser_test_base.h b/content/public/test/browser_test_base.h
index 3be820842ddf63ddd03134c00df7fb89a436a2bb..32de8ce16272309b728dc66569ccf7fe0e41a947 100644
--- a/content/public/test/browser_test_base.h
+++ b/content/public/test/browser_test_base.h
@@ -132,10 +132,10 @@ class BrowserTestBase : public testing::Test {
   void ProxyRunTestOnMainThreadLoop();
 
   // Testing server, started on demand.
-  scoped_ptr<net::SpawnedTestServer> spawned_test_server_;
+  std::unique_ptr<net::SpawnedTestServer> spawned_test_server_;
 
   // Embedded test server, cheap to create, started on demand.
-  scoped_ptr<net::EmbeddedTestServer> embedded_test_server_;
+  std::unique_ptr<net::EmbeddedTestServer> embedded_test_server_;
 
   // Host resolver used during tests.
   scoped_refptr<net::RuleBasedHostResolverProc> rule_based_resolver_;