Minor comment updates to CertVerify related code.

net/cert/cert_verify_result.h

Index: net/cert/cert_verify_result.h
diff --git a/net/cert/cert_verify_result.h b/net/cert/cert_verify_result.h
index f8e0ded43f57eaa1ff1e0456b079ba018f2837e9..176c4ca50ed4ca379429c2eb38ee641bf1a8faa7 100644
--- a/net/cert/cert_verify_result.h
+++ b/net/cert/cert_verify_result.h
@@ -26,7 +26,6 @@ class NET_EXPORT CertVerifyResult {
 
   void Reset();
 
-  // Comparing CertVerifyResult with a nullptr |verified_cert| is invalid.
   bool operator==(const CertVerifyResult& other) const;
 
   // The certificate chain that was constructed during verification.
@@ -53,7 +52,8 @@ class NET_EXPORT CertVerifyResult {
   // chain.
   CertStatus cert_status;
 
-  // Properties of the certificate chain.
+  // Hash algorithms used by the certificate chain, excluding the trust
+  // anchor.
   bool has_md2;
   bool has_md4;
   bool has_md5;