Replace string::find(prefix) == 0 pattern with base::StartsWith().

net/cookies/canonical_cookie.cc

Index: net/cookies/canonical_cookie.cc
diff --git a/net/cookies/canonical_cookie.cc b/net/cookies/canonical_cookie.cc
index 407c9ff20a450f0304af3297b2c1aff0c21f47c7..2469f28660aa073efe634e028a8c4c0a16d810eb 100644
--- a/net/cookies/canonical_cookie.cc
+++ b/net/cookies/canonical_cookie.cc
@@ -480,9 +480,9 @@ CanonicalCookie::CookiePrefix CanonicalCookie::GetCookiePrefix(
     const std::string& name) {
   const char kSecurePrefix[] = "__Secure-";
   const char kHostPrefix[] = "__Host-";
-  if (name.find(kSecurePrefix) == 0)
+  if (base::StartsWith(name, kSecurePrefix, base::CompareCase::SENSITIVE))
     return CanonicalCookie::COOKIE_PREFIX_SECURE;
-  if (name.find(kHostPrefix) == 0)
+  if (base::StartsWith(name, kHostPrefix, base::CompareCase::SENSITIVE))
     return CanonicalCookie::COOKIE_PREFIX_HOST;
   return CanonicalCookie::COOKIE_PREFIX_NONE;
 }