Make TrustStore into an interface, move impl to TrustStoreInMemory.

net/tools/cert_verify_tool/verify_using_path_builder.cc

Index: net/tools/cert_verify_tool/verify_using_path_builder.cc
diff --git a/net/tools/cert_verify_tool/verify_using_path_builder.cc b/net/tools/cert_verify_tool/verify_using_path_builder.cc
index bdfa120b2e94b4d151fe49901969e27ab9d828a6..2392f2e34a1b3109b426fb86bfb52e74c33d20fc 100644
--- a/net/tools/cert_verify_tool/verify_using_path_builder.cc
+++ b/net/tools/cert_verify_tool/verify_using_path_builder.cc
@@ -18,7 +18,7 @@
 #include "net/cert/internal/parsed_certificate.h"
 #include "net/cert/internal/path_builder.h"
 #include "net/cert/internal/signature_policy.h"
-#include "net/cert/internal/trust_store.h"
+#include "net/cert/internal/trust_store_static.h"
 #include "net/cert_net/cert_net_fetcher_impl.h"
 #include "net/tools/cert_verify_tool/cert_verify_tool_util.h"
 #include "net/url_request/url_request_context.h"
@@ -118,7 +118,7 @@ bool VerifyUsingPathBuilder(
   at_time.UTCExplode(&exploded_time);
   net::der::GeneralizedTime time = ConvertExplodedTime(exploded_time);
 
-  net::TrustStore trust_store;
+  net::TrustStoreStatic trust_store;
   for (const auto& der_cert : root_der_certs) {
     scoped_refptr<net::ParsedCertificate> cert =
         net::ParsedCertificate::CreateFromCertificateCopy(der_cert.der_cert,