Replace scoped_ptr with unique_ptr in webrtc/base/

webrtc/api/test/fakedtlsidentitystore.h

Index: webrtc/api/test/fakedtlsidentitystore.h
diff --git a/webrtc/api/test/fakedtlsidentitystore.h b/webrtc/api/test/fakedtlsidentitystore.h
index 8bbffbf93e96e63c6ea1a54da8b00a559802d633..89c4084d120850ed828d9266c7431db039d67274 100644
--- a/webrtc/api/test/fakedtlsidentitystore.h
+++ b/webrtc/api/test/fakedtlsidentitystore.h
@@ -11,6 +11,7 @@
 #ifndef WEBRTC_API_TEST_FAKEDTLSIDENTITYSERVICE_H_
 #define WEBRTC_API_TEST_FAKEDTLSIDENTITYSERVICE_H_
 
+#include <memory>
 #include <string>
 #include <utility>
 
@@ -127,7 +128,7 @@ class FakeDtlsIdentityStore : public webrtc::DtlsIdentityStoreInterface,
         rtc::kPemTypeRsaPrivateKey,
         reinterpret_cast<const unsigned char*>(key.data()),
         key.length());
-    rtc::scoped_ptr<rtc::SSLIdentity> identity(
+    std::unique_ptr<rtc::SSLIdentity> identity(
         rtc::SSLIdentity::FromPEMStrings(pem_key, pem_cert));
 
     return rtc::RTCCertificate::Create(std::move(identity));