Fix classes that have too many virtuals for inline constructors.

net/quic/crypto/proof_verifier_chromium.h

Index: net/quic/crypto/proof_verifier_chromium.h
diff --git a/net/quic/crypto/proof_verifier_chromium.h b/net/quic/crypto/proof_verifier_chromium.h
index 215bc3d2845885366827240a12aff7a2725f63c8..26e5dce1f856cf2d46e2f824423b4cbbbb600d5e 100644
--- a/net/quic/crypto/proof_verifier_chromium.h
+++ b/net/quic/crypto/proof_verifier_chromium.h
@@ -31,6 +31,7 @@ class TransportSecurityState;
 class NET_EXPORT_PRIVATE ProofVerifyDetailsChromium
     : public ProofVerifyDetails {
  public:
+  ProofVerifyDetailsChromium();
 
   // ProofVerifyDetails implementation
   ProofVerifyDetails* Clone() const override;