Convert //extensions/browser/api from scoped_ptr to std::unique_ptr

extensions/browser/api/usb/usb_apitest.cc

Index: extensions/browser/api/usb/usb_apitest.cc
diff --git a/extensions/browser/api/usb/usb_apitest.cc b/extensions/browser/api/usb/usb_apitest.cc
index 887ae2170fb1bf9429499f04ce2b6db4d7292784..3be38496c29b1af5c33e20e61d399abf5b3668b6 100644
--- a/extensions/browser/api/usb/usb_apitest.cc
+++ b/extensions/browser/api/usb/usb_apitest.cc
@@ -6,6 +6,7 @@
 
 #include <numeric>
 
+#include "base/memory/ptr_util.h"
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/test/test_utils.h"
@@ -112,9 +113,9 @@ class TestExtensionsAPIClient : public ShellExtensionsAPIClient {
  public:
   TestExtensionsAPIClient() : ShellExtensionsAPIClient() {}
 
-  scoped_ptr<DevicePermissionsPrompt> CreateDevicePermissionsPrompt(
+  std::unique_ptr<DevicePermissionsPrompt> CreateDevicePermissionsPrompt(
       content::WebContents* web_contents) const override {
-    return make_scoped_ptr(new TestDevicePermissionsPrompt(web_contents));
+    return base::WrapUnique(new TestDevicePermissionsPrompt(web_contents));
   }
 };
 
@@ -141,7 +142,7 @@ class UsbApiTest : public ShellApiTest {
  protected:
   scoped_refptr<MockUsbDeviceHandle> mock_device_handle_;
   scoped_refptr<MockUsbDevice> mock_device_;
-  scoped_ptr<MockDeviceClient> device_client_;
+  std::unique_ptr<MockDeviceClient> device_client_;
 };
 
 }  // namespace